Editing Interstate 10

{{Short description|Interstate Highway across the southern US}}
{{Redirect|I-10||I10 (disambiguation){{!}}I10}}
{{Use mdy dates|date=August 2017}}
{{Use American English|date=February 2023}}
{{Infobox road
| country = USA
| type = I
| route = 10
| map = {{Maplink|frame=yes|plain=yes|frame-align=center|frame-width=290|type=line|from=Interstate 10.map}}
| map_custom = yes
| map_notes = I-10 highlighted in red
| length_mi = 2460.34
| length_ref = <ref name="FHWA log">{{cite web |last=Starks |first=Edward |date=January 27, 2022 |title=Table 1: Main Routes of the Dwight D. Eisenhower National System of Interstate and Defense Highways |url=https://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/table01.cfm |access-date=February 17, 2023 |work=FHWA Route Log and Finder List |publisher=[[Federal Highway Administration]] |archive-date=September 20, 2023 |archive-url=https://web.archive.org/web/20230920000348/https://www.fhwa.dot.gov/planning/national_highway_system/interstate_highway_system/routefinder/table01.cfm |url-status=live }}</ref>
| formed = 1957
| direction_a = West
| terminus_a = {{Jct|state=CA|SR|1}} in [[Santa Monica, CA]]
| junction = {{plainlist|<!-- PER [[WP:USRD/STDS]] NO MORE THAN 7-10 MAJOR INTERSECTIONS HERE!!! (This is not meant to be an expansive list of every single major junction here. Thanks.)-->
*{{Jct|country=USA|I|5}} in [[Los Angeles|Los Angeles, CA]]
*{{Jct|country=USA|I|15}} in [[Ontario, California|Ontario, CA]]
*{{Jct|country=USA|I|17}} in [[Phoenix, Arizona|Phoenix, AZ]]
*{{Jct|country=USA|I|25}} in [[Las Cruces, New Mexico|Las Cruces, NM]]
*{{Jct|country=USA|I|20}} in [[Reeves County, Texas|Reeves County, TX]]
*{{Jct|country=USA|I|35}} through [[San Antonio|San Antonio, TX]]
*{{Jct|country=USA|I|45}} in [[Houston|Houston, TX]]
*{{Jct|country=USA|I|55}} in [[LaPlace, Louisiana|LaPlace, LA]]
*{{Jct|country=USA|I|65}} in [[Mobile, Alabama|Mobile, AL]]
*{{Jct|country=USA|I|75}} near [[Lake City, Florida|Lake City, FL]]
}}
| direction_b = East
| terminus_b = {{Jct|country=USA|I|95|US|17}} in [[Jacksonville, FL]]
| states = [[California]], [[Arizona]], [[New Mexico]], [[Texas]], [[Louisiana]], [[Mississippi]], [[Alabama]], [[Florida]]
}}

'''Interstate&nbsp;10''' ('''I-10''') is the southernmost transcontinental highway in the [[Interstate Highway System]] of the United States. It is the fourth-longest Interstate in the country at {{convert|2460.34|mi|km}}, following [[Interstate 90|I-90]], [[Interstate 80|I-80]], and [[Interstate 40|I-40]]. It was part of the originally planned Interstate Highway network that was laid out in 1956, and its last section was completed in 1990.

I-10 stretches from the [[Pacific Ocean]] at [[California State Route 1|State Route&nbsp;1]] (SR&nbsp;1, Pacific Coast Highway) in [[Santa Monica, California]], to [[Interstate 95|I-95]] in [[Jacksonville, Florida]]. Other major cities connected by I-10 include (from west to east) [[Los Angeles]], [[Phoenix, Arizona|Phoenix]], [[Las Cruces, New Mexico|Las Cruces]], [[El Paso, Texas|El Paso]], [[San Antonio]], [[Houston]], [[Baton Rouge, Louisiana|Baton Rouge]], [[New Orleans]], [[Gulfport, Mississippi|Gulfport]], [[Mobile, Alabama|Mobile]], [[Pensacola, Florida|Pensacola]], and [[Tallahassee, Florida|Tallahassee]]. Over one-third of its total length is within the state of [[Texas]], where the freeway spans the state at its widest breadth.

== Route description ==
{{lengths table|length_ref=<ref name="FHWA log" />}}
|-
|[[Interstate 10 in California|CA]]
|{{convert|242.54|mi|km|disp=table}}
|-
|[[Interstate 10 in Arizona|AZ]]
|{{convert|392.33|mi|km|disp=table}}
|-
|[[Interstate 10 in New Mexico|NM]]
|{{convert|164.27|mi|km|disp=table}}
|-
|[[Interstate 10 in Texas|TX]]
|{{convert|881.00|mi|km|disp=table}}
|-
|[[Interstate 10 in Louisiana|LA]]
|{{convert|274.42|mi|km|disp=table}}
|-
|[[Interstate 10 in Mississippi|MS]]
|{{convert|77.19|mi|km|disp=table}}
|-
|[[Interstate 10 in Alabama|AL]]
|{{convert|66.31|mi|km|disp=table}}
|-
|[[Interstate 10 in Florida|FL]]
|{{convert|362.28|mi|km||disp=table}}
|-
|Total
|{{convert|2460.34|mi|km|disp=table}}
|}
{{multiple image
| direction         = vertical
| width             = 250
| image1            = McClure Tunnel west.jpg
| caption1          = Western end of I-10 at the McClure Tunnel in Santa Monica, California
| image2            = I10eastneari15interchange.jpg
| caption2          = The San Bernardino Freeway in California near the interchange with the Ontario Freeway (I-15)
| image3            = Interstate 17 southern terminus in Phoenix.jpg
| caption3          = The end of I-17 at I-10 in Phoenix, Arizona
| image4            = I-10 New Mexico 5.JPG
| caption4          = View of Lordsburg from US&nbsp;70 and the junction with I-10 in New Mexico
| image5            = 45intoI-10 2.jpg
| caption5          = I-45 and I-10 next to [[Downtown Houston]], Texas
| image6            = The I-10, running west of New Orleans.jpg
| caption6          = I-10 running west of New Orleans, Louisiana, spans the [[Bonnet Carré Spillway]] at Lake Pontchartrain as the [[I-10 Bonnet Carré Spillway Bridge]]
| image7            = Mobile Alabama I-10 downtown.jpg
| caption7          = I-10 eastbound in downtown Mobile, Alabama, approaching the George Wallace Tunnel
| image8            = I-10 west at US 17 Alt.jpg
| caption8          = I-10 west at the interchange for US&nbsp;17 Alt. south in Jacksonville, Florida
}}

=== California ===
{{Main|Interstate 10 in California}}
Between its west terminus in Santa Monica, California, and the major [[East Los Angeles Interchange]], I-10 is known as the [[Santa Monica Freeway]]. The Santa Monica Freeway is also called the Rosa Parks Freeway, named after [[Rosa Parks|the civil rights activist]], for the segment beginning at [[Interstate 405 (California)|I-405]] (San Diego Freeway), and ending at [[Interstate 110 and State Route 110 (California)|I-110/SR&nbsp;110]] (Harbor Freeway). The segment between the East Los Angeles Interchange, in [[East Los Angeles, California|East Los Angeles]], and the city of [[San Bernardino, California|San Bernardino]], {{convert|63|mi|km}} long, is called the [[San Bernardino Freeway]]. 

Other names exist for I-10. For example, from 1976 to 2022, a sign near the western terminus of the highway in Santa Monica proclaimed the highway to be the [[Christopher Columbus]] Transcontinental Highway. The state legislature authorized its removal in 2022 after years of lobbying by Native Americans.<ref>{{cite news |title=Christopher Columbus' name to be removed from stretch of I-10 in LA |url=https://spectrumnews1.com/ca/la-west/politics/2022/09/01/christopher-columbus--name-to-be-removed-from-stretch-of-i-10-in-la |access-date=December 11, 2022 |work=Spectrum News 1 |publisher=[[Charter Communications]] |date=September 1, 2022}}</ref> 

I-10 is known to a considerably lesser degree as the Veterans Memorial Highway, and it is listed as a [[Blue Star Memorial Highway]]. In [[Palm Springs, California|Palm Springs]], I-10 is also named the Sonny Bono Memorial Freeway, named after [[Sonny Bono|the singer, actor, and politician]], as a tribute to the late entertainer who served both as the mayor of Palm Springs, and as a [[US Representative]]. Another stretch a short distance east in [[Indio, CA|Indio]] is proclaimed the Doctor June McCarroll Memorial Freeway, named after [[June McCarroll|the nurse known for popularizing road lane striping]].

=== Arizona ===
{{Main|Interstate 10 in Arizona}}
In [[Arizona]], the highway is designated the Pearl Harbor Memorial Highway. The portion through [[Phoenix, Arizona|Phoenix]] is named the [[Papago Freeway]], and it is a vital piece of the [[Roads and freeways in metropolitan Phoenix|metropolitan Phoenix freeway system]]. This designation starts at [[Arizona State Route 101|State Route&nbsp;101]] (SR&nbsp;101; Loop&nbsp;101), near 99th Avenue, and continues eastward to the interchange southeast of downtown, which is the terminus of [[Interstate 17|I-17]].

Near [[Buckeye, Arizona|Buckeye]], the freeway has milemarkers posted every {{convert|0.2|mi|km}} from 112.2 to 110.8 with the [[Interstate shield]] and direction of travel posted on the westbound lanes. On the eastbound lanes, milemarkers from 110.8 to 112.2 do not include the I‑10 shield and direction of travel.

From the southern terminus of I-17 to the southernmost junction with [[Arizona State Route 202|SR&nbsp;202]] (Loop&nbsp;202), the highway is signed as the Maricopa Freeway. This name holds true as well for I-17 from its southern terminus to the Durango Curve south of Buckeye Road. From Loop&nbsp;202 south to the eastern terminus of [[Interstate 8|I-8]] just southeast of [[Casa Grande, Arizona|Casa Grande]], the highway is declared the Pearl Harbor Memorial Highway. The [[Arizona Department of Transportation]] also has maps that show it as the Maricopa Freeway, while the [[American Automobile Association]] and other sources show it as the Pima Freeway. The latter's name is used on a stretch of Loop&nbsp;101 from Loop&nbsp;202 to I-17.

Between I-17 in Phoenix and the [[Interstate 19|I-19]] interchanges in [[Tucson, Arizona|Tucson]], I-10 is included in the federally designated [[CANAMEX Corridor]], extending from [[Mexico City, Mexico]], to [[Edmonton, Alberta]].

In Tucson, between I-10 mileposts&nbsp;259 and 260 are interchange ramps connecting I-10 with the northern terminus of I-19.

The highest elevation along I-10 occurs just east of Tucson, {{convert|20|mi|km}} west of [[Willcox, Arizona|Willcox]], at the milemarker&nbsp;320 exit for the rest stop. The westbound lanes of I-10 briefly cross above {{convert|5000|ft|m}} above [[sea level]].

=== New Mexico ===
{{main|Interstate 10 in New Mexico}}
In New Mexico, I-10 more or less follows the former path of [[U.S. Route 80|US Route&nbsp;80]] (US&nbsp;80) across the state, although major portions of old US&nbsp;80 were bypassed in the western [[New Mexico Bootheel]] and in [[Doña Ana County, New Mexico|Doña Ana County]]. I-10 passes through three southern New Mexico municipalities of regional significance before the junction with [[Interstate 25|I-25]]: [[Lordsburg, New Mexico|Lordsburg]], [[Deming, New Mexico|Deming]], and [[Las Cruces, New Mexico|Las Cruces]]. Most of I-10 in New Mexico, between exit&nbsp;24 and exit&nbsp;135, is concurrent with [[U.S. Route 70|US&nbsp;70]].

At Lordsburg is the western junction of US&nbsp;70 and a [[concurrency (road)|concurrency]]; the two highways are joined all the way to Las Cruces. Several exits between Lordsburg and Deming are either for former towns (including [[Separ, New Mexico|Separ]], [[Quincy, New Mexico|Quincy]], and [[Gage, New Mexico|Gage]]) or lack any town at all.

At Deming is the western junction of [[U.S. Route 180|US&nbsp;180]], which also forms a concurrency with I-10 all the way to El Paso. {{convert|1|mi|km|spell=In}} north of Deming on US&nbsp;180 is [[New Mexico State Road 26|State Road&nbsp;26]] (NM&nbsp;26) which serves as a short cut to north I-25 and [[Albuquerque, New Mexico|Albuquerque]].

I-10/US&nbsp;70/US&nbsp;180 continue east to Las Cruces which is the southern end of I-25. US&nbsp;70 leaves I-10 (prior to the junction with I-25), heading northeast to [[Alamogordo, New Mexico|Alamogordo]] and passing through the north side of Las Cruces. The junction with I-25 occurs just south of the [[New Mexico State University]] campus, on the southern end of Las Cruces. I-10/US&nbsp;180 becomes concurrent with [[U.S. Route 85|US&nbsp;85]] at the junction with I-25. I-10/US&nbsp;85/US&nbsp;180 then turns south to the Texas state line, crossing it at [[Anthony, New Mexico|Anthony]].

=== Texas ===
{{Main|Interstate 10 in Texas}}
From the state line with New Mexico (at [[Anthony, Texas|Anthony]]) to [[Texas State Highway 20|State Highway&nbsp;20]] (SH&nbsp;20) in west [[El Paso, Texas|El Paso]], I-10 is bordered by frontage roads South Desert for lanes along I-10 east (actually headed south) and North Desert for lanes along I-10 west (headed north). The Interstate then has no frontage roads for {{convert|9|mi|km|spell=in}} but regains them east of downtown and retains them to [[Clint, Texas|Clint]]. In this stretch, the frontage roads are Gateway East for the eastbound lanes and Gateway West for the westbound lanes. All four frontage roads are one-way streets. Gateway East and Gateway West are notable, in particular, for the [[Texas Department of Transportation]] (TxDOT)'s liberal usage of the [[Texas U-turn]] at most underpasses of I-10 on this stretch.

I-10 is the western terminus for [[Interstate 20|I-20]], and the two highways intersect in [[Reeves County, Texas|Reeves County]], about {{convert|41|mi|km}} southwest of Pecos, at milemarker&nbsp;186.

A small portion of I-10 from [[Texas State Highway Loop 1604|Loop&nbsp;1604]] to [[Downtown San Antonio]] is known as the Northwest Expressway or the McDermott Freeway, while another portion from downtown to Loop&nbsp;1604 east is called East Expressway or José López Freeway. In Downtown San Antonio, it has a concurrency with [[Interstate 35|I-35]], and, throughout most of the northwest side of the city, it has a concurrency with [[U.S. Route 87|US&nbsp;87]], which begins in [[Comfort, Texas|Comfort]], before turning off and heading east out of the city. Starting in San Antonio, it follows a more direct route of [[U.S. Route 90|US&nbsp;90]], with occasional small concurrences.

In [[Houston]], from the western suburb of [[Katy, Texas|Katy]] to downtown, I-10 is commonly known as the [[Katy Freeway]]. This section has as many as 18&nbsp;lanes (12&nbsp;main lanes and 6 mid-freeway [[high-occupancy toll]] [HOT]/[[high-occupancy vehicle]] [HOV] lanes, not counting access road turning lanes)<ref>{{cite web |author = Texas Department of Transportation |author-link = Texas Department of Transportation |publisher = Texas Department of Transportation |url = http://www.katyfreeway.net/images/schematics_pdf/62.pdf |title = Schematic Layout: IH 10 Katy Frwy, IH 10 at Bunker Hill Road |url-status = usurped |archive-url=https://web.archive.org/web/20141209095152/http://www.katyfreeway.net/images/schematics_pdf/62.pdf |archive-date=December 9, 2014 }}</ref><ref>{{google maps|url=https://maps.google.com/?ll=29.784411,-95.53451&spn=0.001748,0.002264&t=k&z=19 |access-date=January 28, 2013}}</ref> and is one of the widest freeways in the world. The space for the expansion was the [[Right-of-way (transportation)|right-of-way]] of the old [[Missouri–Kansas–Texas Railroad]]. The section east of [[Downtown Houston]] is officially known as the East Freeway, although it is widely known by locals as the Baytown East Freeway due to a marketing push by [[Baytown, Texas|Baytown]], one of the largest cities in [[Greater Houston]].

In [[Beaumont, Texas|Beaumont]], it is known as I-10 south, south of Calder Avenue, and I-10 north, north of Calder Avenue. It is known as I-10 east from the I-10 curve to the [[Neches River]], which is Beaumont's and [[Jefferson County, Texas|Jefferson County]]'s eastern boundary line. Continuing into [[Orange County, Texas|Orange County]] and passing through the city of [[Orange, Texas|Orange]] at the easternmost end of Texas, and located at the base of the [[Sabine River (Texas–Louisiana)|Sabine River]] bridge is the last I-10 milemarker in Texas, number&nbsp;880, before entering into Louisiana. Approximately 36&nbsp;percent of I-10's entire route is located within Texas; the longest segment of any signed Interstate within one state.

=== Louisiana ===
{{Main|Interstate 10 in Louisiana}}
In [[Lake Charles, Louisiana|Lake Charles]], a {{convert|13|mi|km|adj=on}} loop route signed as [[Interstate 210 (Louisiana)|I-210]] branches off of I-10 and goes through the southern portion of the city. In [[Lafayette, Louisiana|Lafayette]], it serves as the southern terminus for [[Interstate 49|I-49]]. Shortly afterward, there is an {{convert|18|mi|km|adj=on}} stretch of elevated highway between Lafayette and Baton Rouge known as the [[Atchafalaya Swamp Freeway]], as it goes over the [[Atchafalaya River]], across the [[Atchafalaya Basin Bridge]], and the adjacent swamps. It crosses the [[Mississippi River]] at the [[Horace Wilkinson Bridge]] in [[Baton Rouge, Louisiana|Baton Rouge]], where the eastbound lanes are the only portion of I-10 that is essentially one lane. 

After crossing the Horace Wilkinson Bridge, two lanes from [[Interstate 110 (Louisiana)|I-110]] south merge with two lanes I-10 east into three lanes with one of the eastbound lanes quickly becoming an exit only lane. After this, the highway is back to four lanes approaching the I-10/[[Interstate 12|I-12]] split. I-12 links Baton Rouge to [[Slidell, Louisiana|Slidell]] and bypasses I-10's southward jog through New Orleans by remaining north of [[Lake Pontchartrain]]. On this route, I-10 serves as the southern terminus for I-55 in [[LaPlace, Louisiana|LaPlace]] and crosses over a portion of Lake Pontchartrain on the [[I-10 Bonnet Carré Spillway Bridge]]. 

In [[New Orleans]], a stretch of I-10 from the I-10/I-610 Junction near the [[Orleans Parish, Louisiana|Orleans]]–[[Jefferson Parish, Louisiana|Jefferson]] parish line to the [[U.S. Route 90|US&nbsp;90]]/[[U.S. Route 90 Business (New Orleans, Louisiana)|US&nbsp;90 Business]] (US&nbsp;90 Bus.) junction is known as the [[Pontchartrain Expressway]]. A dip near the I-10/I-610 junction to travel under a railroad track is one of the lowest points in [[New Orleans]] and is highly susceptible to flooding. Buildups of rainwater dozens of feet deep (several meters) are commonplace during hurricanes. Near [[Slidell, Louisiana|Slidell]], I-10 serves as the eastern terminus of I-12 and the southern terminus of I-59; turning east to the [[Mississippi]] state line. The highway is known as the Stephen Ambrose Memorial Highway, named after [[Stephen E. Ambrose|the historian and writer]], until the state line.

[[Interstate 310 (Louisiana)|I-310]] and [[Interstate 510|I-510]] are the built sections of what was slated to be [[Interstate 410 (Louisiana 1969)|I-410]], which would have acted as a southern bypass of New Orleans. They function as spur routes serving lower density or suburban areas west and east of New Orleans respectively. [[Interstate 610 (Louisiana)|I-610]] is a shortcut from the eastern to western portion of New Orleans avoiding I-10's detour into the [[New Orleans Central Business District]].

=== Mississippi ===
{{Main|Interstate 10 in Mississippi}}
I-10 in Mississippi runs from the Louisiana state line to the Alabama state line through [[Hancock County, Mississippi|Hancock]], [[Harrison County, Mississippi|Harrison]], and [[Jackson County, Mississippi|Jackson]] counties on the [[Gulf Coast of the United States|Gulf Coast]]. It passes through the northern sections of [[Gulfport, Mississippi|Gulfport]] and [[Biloxi, Mississippi|Biloxi]] while passing just north of [[Pascagoula, Mississippi|Pascagoula]] and [[Bay St. Louis, Mississippi|Bay St. Louis]]. It also passes right south of the NASA [[Stennis Space Center]]. The highway roughly parallels [[U.S. Route 90|US&nbsp;90]].

The law defining the route of I-10 is Mississippi Code §&nbsp;65-3-3.

=== Alabama ===
{{Main|Interstate 10 in Alabama}}
I-10 crosses over the border from [[Jackson County, Mississippi]], and it goes through [[Mobile County, Alabama|Mobile County]] in southwestern Alabama. In [[Mobile, Alabama|Mobile]], I-10 is the southern terminus of [[Interstate 65|I-65]]. In downtown Mobile, I-10 goes through one of the few highway tunnels in Alabama, the [[George Wallace Tunnel]] under the [[Mobile River]].

The speed limit of the eastbound approach is posted at {{convert|40|mph|km/h|abbr=on}} because of the sharp downward curve approaching the tunnel. The highway then crosses approximately {{convert|8|mi|km|spell=in}} of the upper part of [[Mobile Bay]] on the [[Jubilee Parkway]], a bridge that local people call the "Bayway". The highway is next to [[Battleship Parkway]]. On the other side of Mobile Bay, the highway goes through the suburban area of [[Baldwin County, Alabama|Baldwin County]] before passing through [[Malbis, Alabama|Malbis]], [[Loxley, Alabama|Loxley]], and then on to the [[Perdido River]] to cross over into [[Florida]].

=== Florida ===
{{Main|Interstate 10 in Florida}}
I-10 travels north of the cities of [[Pensacola, Florida|Pensacola]] and [[Tallahassee, Florida|Tallahassee]], serving the suburban areas within each respective city. In the former, a {{Convert|6|mi|km|adj=on|spell=in}} spur route serves the downtown area, signed as [[Interstate 110 (Florida)|I-110]]. Most of I-10 in Florida travels through some of the least-populated areas in the state, with large portions of I-10 west of [[Interstate 295 (Florida)|I-295]] in [[Jacksonville, Florida|Jacksonville]] having only four lanes.<ref>{{cite web|url=http://www.southeastroads.com/i-010e_fl.html |title=Interstate 10 East (Jacksonville–Duval County)] |work=AA Roads |date=February 3, 2005 |access-date=November 21, 2006 |url-status=dead |archive-url=https://web.archive.org/web/20060630100228/http://southeastroads.com/i-010e_fl.html |archive-date=June 30, 2006 }}{{self-published source|date= December 2015}}</ref>

In Jacksonville, as in Arizona, I-10 is designated as the Pearl Harbor Memorial Highway. The route officially ends at the I-10/I-95 interchange northwest of [[Downtown Jacksonville]]. Throughout much of Florida, I-10 is also State Road&nbsp;8 (SR&nbsp;8), though it is not signed as such. (I-110 in Pensacola being known as SR&nbsp;8A.)<ref>{{cite web |url= http://www.dot.state.fl.us/publicinformationoffice/construc/constmap/d3.htm |title= District Three Construction |publisher= Florida Department of Transportation |date= October 19, 2006 |access-date= November 21, 2006 |archive-url= https://web.archive.org/web/20080605023049/http://www.dot.state.fl.us/publicinformationoffice/construc/constmap/d3.htm |archive-date= June 5, 2008 }}</ref>

== History ==
{{expand section|date=December 2015}}
[[File:Christophercolumbustranscontinentalhighway.jpg|thumb|From 1976 to 2022, this sign in Santa Monica, California, (and predecessor signs) declared that I-10 is the "Christopher Columbus Transcontinental Highway", named for the Italian explorer and navigator]]

While the highway has existed as far back as 1957, the last section of the entire route to be completed was a section of the Papago Freeway from both I-17 interchanges (including the [[Deck Park Tunnel]]) in Phoenix, which opened in 1990.

Many widening projects have taken place on the interstate in the late 2000s. In [[Pensacola, Florida]], a {{convert|3|mi|km|adj=on|spell=in}} stretch of I-10 was widened to six lanes in 2008.<ref>{{cite web |url= http://www.i10-i110.com/projects/1.htm |title= Project Descriptions |publisher= [[Florida Department of Transportation]], [[Escambia County, Florida|Escambia County]] |access-date= November 21, 2006 |archive-url= https://web.archive.org/web/20150801224134/http://www.movingi-10forward.com/ |archive-date=August 1, 2015 }}</ref> In [[Tallahassee, Florida]], construction was completed in June 2009 on a project to widen a roughly {{convert|8|mi|km|adj=on|spell=in}} stretch of I-10 to six lanes (eight in some places).<ref>{{cite web |url= http://www.movingi-10forward.com/ |title= I-10: Project Description |work= Moving I-10 Forward |publisher= Florida Department of Transportation |access-date= November 21, 2006 |url-status= usurped |archive-url=https://web.archive.org/web/20150801224134/http://www.movingi-10forward.com/ |archive-date= August 1, 2015 }}</ref> In Tucson, Arizona, all exits between Prince Road and 22nd Street reopened after an extensive, three-year improvement project. I-10 was widened from six to eight lanes, and seven bridges and underpasses have been built to deal with congestion.<ref>{{cite web|url=http://www.i10tucsondistrict.com/construction.html|title=i10tucsondistrict.com|access-date=October 6, 2010|archive-url=https://web.archive.org/web/20101005015516/http://www.i10tucsondistrict.com/construction.html|archive-date=October 5, 2010|url-status=dead}}</ref> 

I-10 from the [[Interstate 8|I-8]] interchange in [[Casa Grande, Arizona|Casa Grande]] to [[Marana, Arizona|Marana]] was widened from four to six lanes from the second half of 2007, to its completion in 2009. Also in Arizona, from Verrado Way in [[Verrado]], [[Buckeye, Arizona|Buckeye]], all the way to [[Avondale, Arizona|Avondale]], the Interstate was widened throughout the late 2000s and early 2010s, with an [[HOV lane]] added between Estrella Parkway in [[Goodyear, Arizona|Goodyear]] and [[Arizona State Route 101|Loop&nbsp;101]].

[[Texas]] formerly shared the highest [[Speed limits in the United States|speed limit in the nation]] with [[Utah]]'s test section of [[Interstate 15|I-15]].{{Efn|Utah {{convert|80|mph|km/h|abbr=on}} speed limit}} The speed limit along I-10 from [[Kerr County, Texas|Kerr County]] to [[El Paso County, Texas|El Paso County]] was raised by the [[Texas Legislature]] to {{Convert|75|mph|km/h|abbr=on}} in 1999 and to {{convert|80|mph|km/h|abbr=on}} in 2006. However, the nighttime maximum speed limit remained {{convert|65|mph|km/h|abbr=on}}, and the daytime truck speed limit was {{Convert|70|mph|km/h|abbr=on}}. With {{convert|70000|mi|km}} of highway in Texas, the {{convert|432|mi|km|adj=on}} stretch of I-10, and {{Convert|89|mi|km}} of I-20, between Monahans and the I-10 interchange at the cusp of the [[Davis Mountains]], only a small percentage of roads were affected.<ref>{{cite web|url=https://www.foxnews.com/story/texas-raises-rural-speed-limits-to-80-mph|title=Texas Raises Rural Speed Limits to 80 MPH|work=Fox News|access-date=October 31, 2010|archive-date=May 22, 2010|archive-url=https://web.archive.org/web/20100522213903/http://www.foxnews.com/story/0,2933,197072,00.html|url-status=live}}</ref> On September 1, 2011, nighttime speed limits were eliminated, and the statutory maximum speed limit in Texas was increased from {{Convert|75|to|80|mph|km/h|abbr=on}}.

As far back as the 1990s, Florida and Alabama have considered a connector that would link [[Dothan, Alabama]], with I-10. In 2008, a proposal to make this new highway a toll road and to expedite its construction to complete it in five years surfaced. In 2012, federal funds previously set aside for the connector were allocated to other projects. In 2014, Florida sought bids for a feasibility study.<ref>{{cite news |url= http://www.wsfa.com/global/story.asp?s=7776794 |title= Dothan to I-10 Connection |location= West Montgomery, AL |publisher= [[WSFA-TV]] |date= January 25, 2008 |access-date= November 27, 2011 |archive-date= June 12, 2018 |archive-url= https://web.archive.org/web/20180612141305/http://www.wsfa.com/global/story.asp?s=7776794 |url-status= dead }}</ref><ref>{{cite news |url= http://www.wjhg.com/home/headlines/I-10-Connector-Funds-Released-to-Other-Projects-168532546.html |title= I-10 Connector Funds Released to Other Projects |location= Panama City, FL |publisher= [[WJHG-TV]] |date= September 4, 2012 |access-date= December 10, 2015 |archive-date= February 27, 2020 |archive-url= https://web.archive.org/web/20200227021646/https://www.wjhg.com/home/headlines/I-10-Connector-Funds-Released-to-Other-Projects-168532546.html |url-status= dead }}</ref><ref>{{cite news |url= http://www.dothaneagle.com/news/i--connector-back-on-the-table/article_0d4427a8-aa36-11e3-8b94-001a4bcf6878.html |title= I-10 Connector Back on the Table |work= [[Dothan Eagle]] |date= March 12, 2014 |access-date= December 10, 2015 |archive-date= October 24, 2021 |archive-url= https://web.archive.org/web/20211024173222/https://dothaneagle.com/news/i--connector-back-on-the-table/article_0d4427a8-aa36-11e3-8b94-001a4bcf6878.html |url-status= live }}</ref>

== Junction list ==
;California
: {{jct|state=CA|CA|1}} in [[Santa Monica, California|Santa Monica]]
: {{jct|state=CA|I|405|dab1=California}} on the [[Mar Vista, Los Angeles|Mar Vista]]–[[Palms, Los Angeles|Palms]]–[[West Los Angeles]] neighborhood line
: {{jct|country=USA|I|110|dab1=California}} in [[Downtown Los Angeles]]
: {{jct|country=USA|I|5}} in [[Boyle Heights, Los Angeles|Boyle Heights]]; the highways travel concurrently through Boyle Heights.
: {{jct|country=USA|US|101}} in Boyle Heights
: {{jct|state=CA|I|710}} on the [[Monterey Park, California|Monterey Park]]–[[Alhambra, California|Alhambra]] city line
: {{jct|state=CA|I|605}} in [[Baldwin Park, California|Baldwin Park]]
: {{jct|country=USA|I|15}} in [[Ontario, California|Ontario]]
: {{jct|state=CA|I|215|dab1=California}} in [[Colton, California|Colton]]
: {{jct|state=CA|Future|210|CA|210}} in [[Redlands, California|Redlands]] 
: {{jct|country=USA|US|95}} in [[Blythe, California|Blythe]]; the highways travel concurrently to [[Quartzsite, Arizona]].
;Arizona
: {{jct|state=AZ|US|95}} in Quartzsite
: {{jct|country=USA|US|60}} southwest of [[Brenda, Arizona|Brenda]]
: {{jct|country=USA|I|17|US|60}} in Phoenix
: {{jct|country=USA|I|17|US|60}} in Phoenix
: {{jct|country=USA|US|60}} in Phoenix
: {{jct|country=USA|I|8}} in [[Casa Grande, Arizona|Casa Grande]]
: {{jct|country=USA|I|19}} in [[Tucson, Arizona|Tucson]]
: {{jct|country=USA|US|191}} north-northwest of [[Cochise, Arizona|Cochise]]; the highways travel concurrently to northeast of [[Willcox, Arizona|Willcox]].
;New Mexico
: {{jct|country=USA|US|70}} in Lordsburg; the highways travel concurrently to Las Cruces.
: {{jct|country=USA|US|180}} in [[Deming, New Mexico|Deming]]; the highways travel concurrently to [[El Paso, Texas]].
: {{jct|country=USA|I|25|US|85}} on the Las Cruces–[[University Park, New Mexico|University Park]] line. I-10/US&nbsp;85 travels concurrently to El Paso, Texas
;Texas
: {{jct|country=USA|I|110|US|54|dab1=Texas}} in El Paso
: {{jct|country=USA|US|62|US|180}} in El Paso
: {{jct|country=USA|US|90}} in [[Van Horn, Texas|Van Horn]]
: {{jct|country=USA|I|20}} in [[Reeves County, Texas|Reeves County]]
: {{jct|country=USA|US|67}} west of [[Fort Stockton, Texas|Fort Stockton]]; the highways travel concurrently to east-southeast of Fort Stockton.
: {{jct|country=USA|US|285}} in Fort Stockton
: {{jct|country=USA|US|385}} in Fort Stockton; the highways travel concurrently to east-southeast of Fort Stockton.
: {{jct|country=USA|US|190}} west-southwest of [[Iraan, Texas|Iraan]]
: {{jct|country=USA|US|277}} in [[Sonora, Texas|Sonora]]
: {{jct|country=USA|US|83|US|377}} in [[Junction, Texas|Junction]]. I-10/US&nbsp;83 travels concurrently to north of [[Segovia, Texas|Segovia]].
: {{jct|country=USA|US|290}} northwest of [[Mountain Home, Texas|Mountain Home]]
: {{jct|country=USA|US|87}} in [[Comfort, Texas|Comfort]]; the highways travel concurrently through [[San Antonio]].
: {{jct|country=USA|I|410}} in San Antonio
: {{jct|country=USA|I|35}} in San Antonio; the highways travel concurrently through Downtown San Antonio.
: {{jct|country=USA|I|35|US|90}} in San Antonio. I-10/US&nbsp;90 travels concurrently to west-southwest of [[Seguin, Texas|Seguin]].
: {{jct|country=USA|I|37|US|281}} in San Antonio
: {{jct|state=TX|I|410}} in San Antonio
: {{jct|country=USA|US|90}} in Seguin
: {{jct|country=USA|US|183}} in [[Luling, Texas|Luling]]
: {{jct|country=USA|US|90}} east of [[Waelder, Texas|Waelder]]
: {{jct|country=USA|US|77}} in [[Schulenburg, Texas|Schulenburg]]
: {{jct|country=USA|US|90}} east-northeast of Schulenburg
: {{jct|country=USA|US|90}} west-southwest of [[Glidden, Texas|Glidden]]
: {{jct|country=USA|US|90}} east of [[Columbus, Texas|Columbus]]; the highways travel concurrently to [[Sealy, Texas|Sealy]].
: {{jct|country=USA|US|90}} in [[Sealy, Texas|Sealy]]; the highways travel concurrently to west-southwest of [[Brookshire, Texas|Brookshire]].
: {{jct|country=USA|US|90}} in [[Katy, Texas|Katy]]; the highways travel concurrently through [[Houston]].
: {{jct|country=USA|I|610|dab1=Texas}} in Houston
: {{jct|country=USA|I|45}} in Houston<!-- Yeah I know someone would want to put my head on a pike for this, but I-45 and I-10 DO NOT travel concurrently through Houston. The "concurrency" is nothing more than a distorted interchange, and they do not share lanes or travel with each other for more than even a mile. -->
: {{jct|country=USA|I|69|US|59}} in Houston
: {{jct|country=USA|I|610|dab1=Texas|US|90}} in Houston
: {{jct|country=USA|US|69|US|96|US|287}} in [[Beaumont, Texas|Beaumont]]; the highways travel concurrently through Beaumont.
: {{jct|country=USA|US|90}} in Beaumont
: {{jct|country=USA|US|90}} in Beaumont; the highways travel concurrently to [[Toomey, Louisiana]].
;Louisiana
: {{jct|country=USA|I|210|dab1=Louisiana}} east of [[Sulphur, Louisiana|Sulphur]]
: {{jct|country=USA|US|90}} west-southwest of [[Westlake, Louisiana|Westlake]]; the highways travel concurrently through [[Lake Charles, Louisiana|Lake Charles]].
: {{jct|country=USA|US|171}} in Lake Charles
: {{jct|country=USA|I|210|dab1=Louisiana}} east-northeast of Lake Charles
: {{jct|country=USA|US|165}} east-northeast of [[Iowa, Louisiana|Iowa]]
: {{jct|country=USA|I|49|US|167}} in [[Lafayette, Louisiana|Lafayette]]
: {{jct|country=USA|I|110|dab1=Louisiana}} in [[Baton Rouge, Louisiana|Baton Rouge]]
: {{jct|country=USA|I|12}} in Baton Rouge
: {{jct|country=USA|US|61}} southeast of [[Sorrento, Louisiana|Sorrento]]
: {{jct|country=USA|US|51}} in [[LaPlace, Louisiana|LaPlace]]
: {{jct|country=USA|I|55}} in LaPlace
: {{jct|country=USA|I|310|dab1=Louisiana}} west of [[Kenner, Louisiana|Kenner]]
: {{jct|country=USA|I|610|dab1=Louisiana}} in [[New Orleans]]
: {{jct|country=USA|US|61}} in New Orleans
: {{jct|country=USA|US|90}} in New Orleans
: {{jct|country=USA|I|610|dab1=Louisiana}} in New Orleans
: {{jct|country=USA|US|90}} in New Orleans
: {{jct|country=USA|I|510}} in New Orleans
: {{jct|country=USA|US|11}} in New Orleans
: {{jct|country=USA|US|190}} in [[Slidell, Louisiana|Slidell]]
: {{jct|country=USA|I|12|I|59}} in Slidell
;Mississippi
: {{jct|country=USA|US|49}} in [[Gulfport, Mississippi|Gulfport]]
: {{jct|country=USA|I|110|dab1=Mississippi}} in [[D'Iberville, Mississippi|D'Iberville]]
;Alabama
: {{jct|country=USA|US|90}} on the [[Theodore, Alabama|Theodore]]–[[Tillmans Corner, Alabama|Tillmans Corner]] line.
: {{jct|country=USA|I|65}} in [[Mobile, Alabama|Mobile]]
: {{jct|country=USA|US|90|US|98}} in Mobile
: {{jct|country=USA|US|90|US|98}} east of Mobile
: {{jct|country=USA|US|90|US|98}} in [[Daphne, Alabama|Daphne]]
;Florida
: {{jct|country=USA|US|29}} on the [[Brent, Florida|Brent]]–[[Ensley, Florida|Ensley]] CDP line
: {{jct|country=USA|I|110|dab1=Florida}} on the Brent–Ensley–[[Ferry Pass, Florida|Ferry Pass]] CDP line
: {{jct|country=USA|US|90}} in Ferry Pass
: {{jct|country=USA|US|331}} in [[DeFuniak Springs, Florida|DeFuniak Springs]]
: {{jct|country=USA|US|231}} south of [[Cottondale, Florida|Cottondale]]
: {{jct|country=USA|US|90}} in [[Midway, Gadsden County, Florida|Midway]]
: {{jct|country=USA|US|27}} in [[Tallahassee, Florida|Tallahassee]]
: {{jct|country=USA|US|319}} in Tallahassee
: {{jct|country=USA|US|90}} in Tallahassee
: {{jct|country=USA|US|19}} north-northeast of [[Capps, Florida|Capps]]
: {{jct|country=USA|US|221}} south-southeast of [[Greenville, Florida|Greenville]]
: {{jct|country=USA|US|90}} southeast of [[Falmouth, Florida|Falmouth]]
: {{jct|country=USA|US|129}} north-northeast of [[Live Oak, Florida|Live Oak]]
: {{jct|country=USA|I|75}} south of [[White Springs, Florida|White Springs]]
: {{jct|country=USA|US|41}} northwest of [[Five Points, Florida|Five Points]]
: {{jct|country=USA|US|441}} in [[Lake City, Florida|Lake City]]
: {{jct|country=USA|US|90}} southwest of [[Sanderson, Florida|Sanderson]]
: {{jct|country=USA|US|301}} south-southwest of [[Baldwin, Florida|Baldwin]]
: {{jct|country=USA|I|295|dab1=Florida}} in [[Jacksonville, Florida|Jacksonville]]
: {{jct|country=USA|US|17}} in Jacksonville; the highways travel concurrently through Jacksonville
: {{jct|country=USA|I|95|US|17}} in Jacksonville
<ref name=randmcnally>{{cite book |author = Rand McNally |year = 2014 |title = The Road Atlas |edition = Walmart |location = Chicago |publisher = Rand McNally |pages = 5, 9, 15, 26-27, 44, 56, 68, 99-101 |isbn = 978-0-528-00771-2}}</ref>

== Auxiliary routes ==
* [[Los Angeles, California]]: [[Interstate 110 and State Route 110 (California)|I-110]], [[Foothill Freeway|I-210]], [[Interstate 710 and State Route 710 (California)|I-710]]
* [[San Bernardino, California]]: [[Foothill Freeway|I-210]]
* [[El Paso, Texas]]: [[Interstate 110 (Texas)|I-110]]
* [[San Antonio, Texas]]: [[Interstate 410|I-410]]
* [[Houston, Texas]]: [[Interstate 610 (Texas)|I-610]]
* [[Lake Charles, Louisiana]]: [[Interstate 210 (Louisiana)|I-210]]
* [[Baton Rouge, Louisiana]]: [[Interstate 110 (Louisiana)|I-110]]
* [[New Orleans, Louisiana]]: [[Interstate 310 (Louisiana)|I-310]], [[Interstate 510|I-510]], [[Interstate 610 (Louisiana)|I-610]], [[Interstate 910|I-910]] (Unsigned)
* [[Biloxi, Mississippi]]: [[Interstate 110 (Mississippi)|I-110]]
* [[Pensacola, Florida]]: [[Interstate 110 (Florida)|I-110]]
* [[Business routes of Interstate 10]]

Another [[Interstate 310 (Mississippi)|I-310]] is proposed to connect to [[Gulfport, Mississippi]] as well.

== See also ==
* {{Portal-inline|U.S. Roads}}

==Notes==
{{noteslist}}

== References ==
{{reflist}}

== External links ==
{{Commons category|Interstate 10}}
{{wikivoyage}}
{{Attached KML|display=title,inline}}
* {{osmrelation-inline|336614}}
* [http://www.interstate-guide.com/i-010.html Interstate Guide: I-10] {{Webarchive|url=https://web.archive.org/web/20141223074722/http://www.interstate-guide.com/i-010.html |date=December 23, 2014 }}

{{I-10 aux}}
{{interstates}}
{{Authority control}}

{{DEFAULTSORT:I10}}
[[Category:Interstate 10| ]]
[[Category:Interstate Highway System|10]]