Editing Interstate 12

{{Short description|Interstate Highway in Louisiana}}
{{Use mdy dates|date=March 2023}}
{{Use American English|date=March 2023}}
{{Infobox road
| state = LA
| type = I
| route = 12
| alternate_name = Republic of West Florida Parkway
| map = {{maplink-road|from=Interstate 12.map}}
| map_custom = yes
| map_notes = I-12 highlighted in red
| length_mi = 85.59
| length_ref = <ref name="FHWA">{{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=March 20, 2023 |work=FHWA Route Log and Finder List |publisher=[[Federal Highway Administration]]}}</ref>
| established = 1967
| direction_a = West
| terminus_a = {{jct|state=LA|I|10}} in [[Baton Rouge, Louisiana|Baton Rouge]]
| junction = *{{jct|state=LA|US|61}} in Baton Rouge
*{{jct|state=LA|I|55}} in [[Hammond, Louisiana|Hammond]]
*{{jct|state=LA|US|190}} between [[Covington, Louisiana|Covington]] and [[Mandeville, Louisiana|Mandeville]]
*{{jct|state=LA|US|11}} in [[Slidell, Louisiana|Slidell]]
| direction_b = East
| terminus_b = {{jct|state=LA|I|10|I|59}} in Slidell
| parishes = [[East Baton Rouge Parish, Louisiana|East Baton Rouge]], [[Livingston Parish, Louisiana|Livingston]], [[Tangipahoa Parish, Louisiana|Tangipahoa]], [[St. Tammany Parish, Louisiana|St. Tammany]]
| previous_type = US
| previous_route = 11
| next_type = LA
| next_route = 12
}}
'''Interstate&nbsp;12''' ('''I-12''') is an intrastate [[Interstate Highway]] located entirely within the [[US state]] of [[Louisiana]]. It spans a total of {{convert|85.59|mi|km}}<ref name="FHWA" /> in an east–west direction from [[Interstate 10 in Louisiana|I-10]] in [[Baton Rouge, Louisiana|Baton Rouge]] to an interchange with both I-10 and [[Interstate 59 in Louisiana|I-59]] in [[Slidell, Louisiana|Slidell]]. Along the way, it passes through the city of [[Hammond, Louisiana|Hammond]], where it intersects [[Interstate 55 in Louisiana|I-55]] and [[U.S. Route 51 in Louisiana|US Route&nbsp;51]] (US&nbsp;51). It also serves the cities of [[Ponchatoula, Louisiana|Ponchatoula]] and [[Denham Springs, Louisiana|Denham Springs]], as well as the [[St. Tammany Parish, Louisiana|St. Tammany Parish]] cities of [[Covington, Louisiana|Covington]] and [[Mandeville, Louisiana|Mandeville]].

I-12 parallels the older [[U.S. Route 190 in Louisiana|US&nbsp;190]] corridor and traverses the north shore of [[Lake Pontchartrain]] in the southeastern portion of the state. The Interstate's length is [[List of Interstate Highways|short for a mainline Interstate]] and is comparable with the country's longest [[auxiliary Interstate]]s. It is one of the shortest mainline Interstates to terminate at the same route (I-10) at either end. Apart from serving the various communities of the [[North Shore, Louisiana|North Shore]], I-12 acts as a long [[Bypass (road)|bypass]] of New Orleans and is heavily used as a shortcut for through traffic on I-10. While I-10 curves to the south to pass through the city limits, I-12 takes a more direct alignment, reducing the distance between Baton Rouge and Slidell by about {{convert|22|mi|km}}.

In 1993, the [[Louisiana State Legislature]] designated I-12 as the Republic of West Florida Parkway. In 2003, signs identifying the highway's official name and bearing the flag of the [[Republic of West Florida]] were erected by the [[Louisiana Department of Transportation and Development]] (DOTD) in order to highlight the unique history of Louisiana's [[Florida Parishes]].

Louisiana is in the process of widening I-12 to three lanes in each direction in locations such as Covington and Mandeville where the Interstate is still two lanes in each direction.

==Route description==
[[File:I-12 West End - Exit 1A - I-10 East (42134288362).jpg|thumb|left|Western terminus in Baton Rouge]]
[[File:LA 1249 Baptist Pumpkin Center 3.JPG|thumb|right|180px|I-12's eastbound exit to LA&nbsp;1249, which leads to the communities of [[Baptist, Louisiana|Baptist]] and [[Pumpkin Center, Louisiana|Pumpkin Center]]]]
[[Image:I-12 eastbound ramp at LA 59 Clarification for I-59.jpg|thumb|right|180px|At the bottom of I-12's eastbound ramp to LA&nbsp;59, travelers also find a shield for the unrelated [[Interstate 59|I-59]], some {{convert|20|mi|km}} farther east]]

===Baton Rouge to Hammond===
From the west, I-12 begins {{convert|3|mi|km|spell=in}} east of downtown [[Baton Rouge, Louisiana|Baton Rouge]] in [[East Baton Rouge Parish, Louisiana|East Baton Rouge Parish]] at an interchange with [[Interstate 10 in Louisiana|I-10]] known as the I-10/I-12 split. While I-10 heads to the southeast toward the [[New Orleans metropolitan area]], I-12 proceeds eastward toward the North Shore of [[Lake Pontchartrain]]. Before leaving Baton Rouge, I-12 intersects some of its major arteries, including [[Louisiana Highway 3064|Louisiana Highway&nbsp;3064]] (LA&nbsp;3064; Essen Lane) and [[Louisiana Highway 73|LA&nbsp;73]] ([[Jefferson Highway]]) via [[Louisiana Highway 1068|LA&nbsp;1068]] (Drusilla Lane). It then passes through a cloverleaf interchange with [[U.S. Route 61 in Louisiana|US&nbsp;61]] ([[Airline Highway]]). These three exits serve several of the area's key medical and shopping centers, such as the [[Our Lady of the Lake Regional Medical Center]] and [[Cortana Mall]]. The final exit in Baton Rouge is an interchange with [[Louisiana Highway 3245|LA&nbsp;3245]] (O'Neal Lane), which serves the [[Ochsner Health System|Ochsner Medical Center-Baton Rouge]] and eastern suburbs.<ref name="GMaps">{{Google maps |url=https://maps.google.com/maps?saddr=I-12+(Western+Terminus)&daddr=30.4792386,-90.50629+to:I-12+(Eastern+Terminus)&hl=en&ll=30.39183,-90.373535&spn=1.305374,2.705383&sll=30.46791,-90.487518&sspn=0.163049,0.338173&geocode=FQsp0AEdFpyR-g%3BFYYT0QEdzvua-iljELVgyyMnhjEnqb-kuQ5Jdg%3BFQhjzgEdStOm-g&mra=dpe&mrsp=1&sz=12&via=1&t=m&z=9 |title=Overview Map of I-12 |access-date=June 12, 2013}}</ref><ref name="P17 2012">{{cite map |publisher=[[Louisiana Department of Transportation and Development]] |title=East Baton Rouge Parish |url=http://www.dotd.la.gov/planning/mapping/Parish%20Maps/East_Baton_Rouge.pdf |archive-url=https://web.archive.org/web/20120902143914/http://www.dotd.la.gov/planning/mapping/Parish%20Maps/East_Baton_Rouge.pdf |url-status=dead |archive-date=September 2, 2012 |cartography=La DOTD Office of Multimodal Planning |date=February 2012 |format=PDF |access-date=June 13, 2013 }}</ref><ref name="D61 2012">{{cite map |publisher=Louisiana Department of Transportation and Development |title=District 61: Official Control Section Map / Construction and Maintenance |url=http://www.dotd.la.gov/planning/mapping/District%20Maps/District_61.pdf |cartography=La DOTD Office of Multimodal Planning |date=February 2012 |format=PDF |access-date=June 13, 2013 |archive-date=October 17, 2013 |archive-url=https://web.archive.org/web/20131017060653/http://www.dotd.la.gov/planning/mapping/District%20Maps/District_61.pdf |url-status=dead }}</ref>

I-12 reaches the [[Amite River]] {{Convert|1.3|mi|km}} later, where it enters [[Livingston Parish, Louisiana|Livingston Parish]] and the city of [[Denham Springs, Louisiana|Denham Springs]]. I-12 skirts the southern edge of town, providing interchanges with [[Louisiana Highway 3002|LA&nbsp;3002]] (South Range Avenue) and [[Louisiana Highway 1026|LA&nbsp;1026]] (Juban Road). East of Denham springs, I-12 skirts the southern edge of Livingston Parish's only other city, [[Walker, Louisiana|Walker]]. The interstate's sole exit in Walker is exit&nbsp;15, an interchange with [[Louisiana Highway 447|LA&nbsp;447]].

Past Walker are smaller communities in the eastern half of the parish. Exits include: [[Louisiana Highway 63|LA&nbsp;63]] serving [[Livingston, Louisiana|Livingston]] (exit&nbsp;22), [[Louisiana Highway 441|LA&nbsp;441]] serving [[Holden, Louisiana|Holden]] (exit&nbsp;29), and [[Louisiana Highway 43|LA&nbsp;43]] serving [[Albany, Louisiana|Albany]] and [[Springfield, Louisiana|Springfield]] (exit&nbsp;32).<ref name="GMaps"/><ref name="P32 2012">{{cite map |publisher=Louisiana Department of Transportation and Development |title=Livingston Parish |url=http://www.dotd.la.gov/planning/mapping/Parish%20Maps/Livingston.pdf |archive-url=https://web.archive.org/web/20120902143128/http://www.dotd.la.gov/planning/mapping/Parish%20Maps/Livingston.pdf |url-status=dead |archive-date=September 2, 2012 |cartography=La DOTD Office of Multimodal Planning |date=February 2012 |format=PDF |access-date=June 13, 2013 }}</ref><ref name="D62 2012">{{cite map |publisher=Louisiana Department of Transportation and Development |title=District 62: Official Control Section Map / Construction and Maintenance |url=http://www.dotd.la.gov/planning/mapping/District%20Maps/District_62.pdf |cartography=La DOTD Office of Multimodal Planning |date=February 2012 |format=PDF |access-date=June 13, 2013 |archive-date=October 17, 2013 |archive-url=https://web.archive.org/web/20131017060653/http://www.dotd.la.gov/planning/mapping/District%20Maps/District_62.pdf |url-status=dead }}</ref>

Shortly after crossing the [[Natalbany River]] into [[Tangipahoa Parish, Louisiana|Tangipahoa Parish]], I-12 intersects [[Louisiana Highway 1249|LA&nbsp;1249]], which leads to the communities of [[Baptist, Louisiana|Baptist]] and [[Pumpkin Center, Louisiana|Pumpkin Center]]. I-12 enters into a [[cloverleaf interchange]] {{Convert|3.2|mi|km}} later with [[Interstate 55 in Louisiana|I-55]] at the southeast corner of [[Hammond, Louisiana|Hammond]], the largest city in Tangipahoa Parish. I-55 heads toward [[Jackson, Mississippi]], on the north and [[New Orleans, Louisiana|New Orleans]] on the south. {{One2a|{{convert|1|mi|km|spell=In}}}} after, [[U.S. Route 51 in Louisiana|US&nbsp;51]] crosses I-12, but the two roads do not intersect. There is instead an interchange with [[U.S. Route 51 Business (Ponchatoula–Hammond, Louisiana)|US&nbsp;51 Business]], which serves downtown Hammond, as well as the city of [[Ponchatoula, Louisiana|Ponchatoula]] to the south.<ref name="GMaps"/><ref name="D62 2012"/><ref name="P53S 2012">{{cite map |publisher=Louisiana Department of Transportation and Development |title=Tangipahoa Parish (South Section) |url=http://www.dotd.la.gov/planning/mapping/Parish%20Maps/Tangipahoa_South.pdf |cartography=La DOTD Office of Multimodal Planning |date=February 2012 |format=PDF |access-date=June 13, 2013 |archive-date=August 26, 2012 |archive-url=https://web.archive.org/web/20120826055316/http://www.dotd.la.gov/planning/mapping/Parish%20Maps/Tangipahoa_South.pdf |url-status=dead }}</ref>

===Hammond to Slidell===
East of Hammond are two rural exits in southeastern Tangipahoa Parish: [[Louisiana Highway 3158|LA&nbsp;3158]] (Airport Road) to [[Hammond Northshore Regional Airport]] and [[Louisiana Highway 445|LA&nbsp;445]] to [[Robert, Louisiana|Robert]].

Just after crossing into [[St. Tammany Parish, Louisiana|St. Tammany Parish]], I-12 curves to the southeast and begins to parallel the North Shore of Lake Pontchartrain. An interchange with [[Louisiana Highway 1077|LA&nbsp;1077]] serves the town of [[Madisonville, Louisiana|Madisonville]] to the south. The following exit, an interchange with [[Louisiana Highway 21|LA&nbsp;21]], also connects to Madisonville as well as the parish seat of [[Covington, Louisiana|Covington]] to the north. Immediately before crossing the [[Tchefuncte River]], an exit to Pinnacle Parkway and East Brewster Road serves the growing shopping area east of LA&nbsp;21.

{{convert|2|mi|km|spell=In}} east of the bridge, I-12 passes through an interchange with [[U.S. Route 190 in Louisiana|US&nbsp;190]] between Covington and [[Mandeville, Louisiana|Mandeville]]. This section of US&nbsp;190 serves as St. Tammany Parish's busiest north–south thoroughfare, connecting Covington and surrounding points with the [[Lake Pontchartrain Causeway]], a {{convert|24|mi|km|-long|adj=mid}} bridge leading to New Orleans. Further exits in St. Tammany Parish west of [[Slidell, Louisiana|Slidell]] include [[Louisiana Highway 59|LA&nbsp;59]] to Mandeville and [[Abita Springs, Louisiana|Abita Springs]], [[Louisiana Highway 1088|LA&nbsp;1088]] to [[Louisiana Highway 36|LA&nbsp;36]], and [[Louisiana Highway 434|LA&nbsp;434]] to [[Lacombe, Louisiana|Lacombe]].<ref name="GMaps"/><ref name="D62 2012"/><ref name="P52W 2012">{{cite map |publisher=Louisiana Department of Transportation and Development |title=St. Tammany Parish (West Section) |url=http://www.dotd.la.gov/planning/mapping/Parish%20Maps/St_Tammany_West.pdf |archive-url=https://web.archive.org/web/20120829234950/http://www.dotd.la.gov/planning/mapping/Parish%20Maps/St_Tammany_West.pdf |url-status=dead |archive-date=August 29, 2012 |cartography=La DOTD Office of Multimodal Planning |date=February 2012 |format=PDF |access-date=June 13, 2013 }}</ref>

I-12 passes through an interchange with Airport Drive {{Convert|6.3|mi|km}} east of the Lacombe exit, which connects to [[Slidell Airport]] due north. At this exit, I-12 enters the northern edge of Slidell. An interchange with [[U.S. Route 11 in Louisiana|US&nbsp;11]] connects to the downtown area. Less than {{convert|2|mi|km|spell=in}} later, I-12 reaches its eastern terminus at a major interchange with I-10 and [[Interstate 59 in Louisiana|I-59]] at the northeast corner of town. From this interchange, I-10 heads southwest toward New Orleans and east toward [[Bay St. Louis, Mississippi]], while I-59 heads north toward [[Hattiesburg, Mississippi]].<ref name="GMaps"/><ref name="D62 2012"/><ref name="P52E 2012">{{cite map |publisher=Louisiana Department of Transportation and Development |title=St. Tammany Parish (East Section) |url=http://www.dotd.la.gov/planning/mapping/Parish%20Maps/St_Tammany_East.pdf |cartography=La DOTD Office of Multimodal Planning |date=February 2012 |format=PDF |access-date=June 13, 2013 |archive-date=August 29, 2012 |archive-url=https://web.archive.org/web/20120829235547/http://www.dotd.la.gov/planning/mapping/Parish%20Maps/St_Tammany_East.pdf |url-status=dead }}</ref>

==History==
I-12 was added to the highway system on October 17, 1957, with I-12 running from I-10 in Baton Rouge to I-59 north of [[Slidell, Louisiana|Slidell]].<ref name="October 1957 Interstates">{{cite map |url=http://commons.wikimedia.org/wiki/File:Interstate_Highway_plan_October_17,_1957_reverse_colors.jpg |title= Routes to Be Added to the National System of Interstate and Defense Highways |date= October 17, 1957 |publisher= Bureau of Public Roads |access-date= December 8, 2012}}</ref> By the mid-1960s, the routes had been realigned to their current configuration, with I-12 and I-59 both ending at I-10 near Slidell.<ref>{{cite map |url= http://commons.wikimedia.org/wiki/File:Interstate_Highway_status_unknown_date.jpg |title=The National System of Interstate and Defense Highways |year= c. 1963 |publisher= Bureau of Public Roads |access-date= December 8, 2012}}</ref> The route was opened to traffic in several sections between January 1967 and June 1976.<ref name="T-P 1-29-1967">{{cite news |title=State Highway Work Sets All-Time Mark |newspaper=The Times-Picayune |location=New Orleans |date=January 29, 1967 |pages=8–11}}</ref><ref name="T-P 6-25-1976">{{cite news |title=Final I-12 Link Opening Today |newspaper=The Times-Picayune |location=New Orleans |date=June 25, 1976 |pages=2–11}}</ref>

With major damage to the [[I-10 Twin Span Bridge]] across [[Lake Pontchartrain]] from [[Hurricane Katrina]], I-12 was temporarily functioning as I-10 between Baton Rouge and Slidell. On October 14, 2005, the eastbound span of I-10 over Lake Pontchartrain reopened to two-way traffic. The westbound span of I-10 reopened on January 6, 2006, with speed, weight and size restrictions, relieving I-12 of much of the congestion that was clogging it from the [[Lake Pontchartrain Causeway]] to the junction with I-10 and I-59.

Since 2012, the DOTD has been widening the Interstate from four lanes to six lanes to accommodate the increasing amount of traffic and make the section safer.<ref>{{cite web |title=La DOTD - Projects |url=http://wwwapps.dotd.la.gov/administration/public_info/projects/home.aspx?key=10 |access-date=March 19, 2023 |website=wwwapps.dotd.la.gov}}</ref><ref>{{cite news |last=Ferrando |first=Erika |date=October 6, 2020 |title=Construction happening now to widen I-12 in St. Tammany Parish |work=[[WWL-TV]] |url=https://www.wwltv.com/article/news/local/northshore/construction-happening-now-to-widen-i-12-in-st-tammany-parish/289-1a616498-f52f-4ae4-a9db-03c97b5f59bc |access-date=March 19, 2023}}</ref><ref>{{cite web |title=I-12 Widening St. Tammany Parish – Benefits of Transportation |url=https://benefits.transportation.org/i-12-widening-st-tammany-parish/ |access-date=March 19, 2023 |website=benefits.transportation.org}}</ref><ref>{{cite web |title=I-12 Widening (US190 – LA 59) - Louisiana {{!}} T Baker Smith Portfolio |url=https://tbsmith.com/portfolio-items/12-widening-us190-la-59/ |access-date=March 19, 2023 |website=T. Baker Smith}}</ref><ref>{{Cite web |date=October 5, 2020 |title=Gov. Edwards, DOTD Break Ground on I-12 Expansion in St. Tammany Parish |url=https://gov.louisiana.gov/index.cfm/newsroom/detail/2716 |access-date=March 20, 2023 |website=gov.louisiana.gov}}</ref> The I-10/I-12/I-59 split, notorious for rough pavement, was repaved in 2015.{{cn|date=March 2023}}

==Exit list==
{{LAinttop|exit|length_ref=<ref name="LRS 2015">{{cite web |url=http://wwwsp.dotd.la.gov/Inside_LaDOTD/Divisions/Mgmt_Finance/GIS/Pages/GIS_Data.aspx |title=La&nbsp;DOTD GIS Data |date=September 2015 |publisher=[[Louisiana Department of Transportation and Development]] |access-date=May 23, 2017}}</ref>}}
{{LAint|exit
|parish=East Baton Rouge
|pspan=7
|location=Baton Rouge
|lspan=7
|mile=0.000
|mile2=0.903
|exit=1A
|road={{jct|state=LA|I|10|city1=Baton Rouge|city2=New Orleans}}
|notes=Western terminus; signed as exit 1A to I-10 east only; exit 159 on I-10
}}
{{LAint|exit
|type=incomplete
|mile=1.223
|mile2=1.649
|exit=1B
|road={{jct|state=LA|LA|3064|name1=Essen Lane}}
|notes=No westbound exit
}}
{{LAint|exit
|type=incomplete
|mile=2.204
|mile2=2.275
|exit=1C
|road={{jct|state=LA|LA|1068|name1=Drusilla Lane|to2=to|LA|73|name2=[[Jefferson Highway]]}}
|notes=Eastbound entrance and westbound exit
}}
{{LAint|exit
|mile=2.608
|mile2=3.206
|exit=2
|road={{jct|state=LA|US|61|name1=[[Airline Highway]]}}
|notes=Signed as exits 2A (south) and 2B (north); to [[Hammond Aire Plaza]] and [[Mall at Cortana]]
}}
{{LAint|exit
|mile=3.807
|mile2=4.447
|exit=4
|road=Sherwood Forest Boulevard
|notes=
}}
{{LAint|exit
|mile=5.707
|mile2=6.498
|exit=6
|road=Millerville Road
|notes=
}}
{{LAint|exit
|mile=6.844
|mile2=7.454
|exit=7
|road= O'Neal Lane
|notes=Former [[Louisiana Highway 3245|LA 3245]]
}}
{{LAint|exit
|parish1=East Baton Rouge
|parish2=Livingston
|location=Denham Springs
|lspan=2
|mile=8.410
|mile2=8.902
|bridge=Bridge over [[Amite River]]
}}
{{LAint|exit
|parish=Livingston
|pspan=7
|mile=10.040
|mile2=10.599
|exit=10
|road={{jct|state=LA|LA|3002|city1=Denham Springs}}
|notes=
}}
{{LAint|exit
|location=none
|mile=12.442
|mile2=13.033
|exit=12
|road={{jct|state=LA|LA|1026|name1=Juban Road}}
|notes=
}}
{{LAint|exit
|location=Walker
|mile=15.711
|mile2=16.338
|exit=15
|road={{jct|state=LA|LA|447|city1=Walker|city2=Port Vincent}}
|notes=
}}
{{LAint|exit
|location=none
|mile=19.604
|mile2=20.359
|exit=19
|road={{jct|state=LA|PR|45|county1=Livingston|city1=Satsuma|city2=Colyell}}
|notes=
}}
{{LAint|exit
|location=Livingston
|mile=22.602
|mile2=23.468
|exit=22
|road={{jct|state=LA|LA|63|city1=Livingston|city2=Frost}}
|notes=
}}
{{LAint|exit
|location=none
|mile=28.667
|mile2=29.745
|exit=29
|road={{jct|state=LA|LA|441|city1=Holden}}
|notes=
}}
{{LAint|exit
|location=none
|mile=32.504
|mile2=33.334
|exit=32
|road={{jct|state=LA|LA|43|city1=Albany|city2=Springfield}}
|notes=To [[Tickfaw State Park]]
}}
{{LAint|exit
|parish=Tangipahoa
|pspan=5
|location=none
|mile=34.848
|mile2=35.562
|exit=35
|road={{jct|state=LA|LA|1249|city1=Baptist|city2=Pumpkin Center}}
|notes=
}}
{{LAint|exit
|location=Hammond
|lspan=2
|mile=38.015
|mile2=38.735
|exit=38
|road={{jct|state=LA|I|55|city1=New Orleans|location2=[[Jackson, Mississippi|Jackson]]}}
|notes=Signed as exits 38A (south) and 38B (north); exit 29 on I-55
}}
{{LAint|exit
|mile=40.016
|mile2=40.595
|exit=40
|road={{nowrap|{{jct|state=LA|US-Bus|51|dab1=Ponchatoula–Hammond|city1=Hammond|city2=Ponchatoula}}}}
|notes=
}}
{{LAint|exit
|location=none
|mile=42.378
|mile2=43.156
|exit=42
|road={{jct|state=LA|LA|3158|dir1=north|name1=Airport Road}}
|notes=Southern terminus of LA&nbsp;3158; to [[Chappapeela Sports Park]] and [[Hammond Northshore Regional Airport]]
}}
{{LAint|exit
|location=none
|mile=47.418
|mile2=48.184
|exit=47
|road={{jct|state=LA|LA|445|city1=Robert}}
|notes=
}}
{{LAint|exit
|parish=St. Tammany
|pspan=11
|location=none
|mile=56.702
|mile2=57.855
|exit=57
|road={{jct|state=LA|LA|1077|city1=Goodbee|city2=Madisonville}}
|notes=To [[Fairview Riverside State Park]]
}}
{{LAint|exit
|location=none
|mile=59.101
|mile2=60.138
|exit=59
|road={{jct|state=LA|LA|21|city1=Covington|city2=Madisonville}}
|notes=
}}
{{LAint|exit
|location=none
|mile=60.220
|mile2=60.958
|exit=60
|road=Pinnacle Parkway / East Brewster Road
|notes=
}}
{{LAint|exit
|location=none
|mile=60.953
|mile2=61.240
|bridge=Bridge over [[Tchefuncte River]]
}}
{{LAint|exit
|location=none
|mile=62.580
|mile2=63.565
|exit=63
|road={{jct|state=LA|US|190|city1=Covington|city2=Mandeville}}
|notes=Signed as exits 63A (east) and 63B (west); additional destinations are [[New Orleans, Louisiana|New Orleans]] via [[Lake Pontchartrain Causeway]] and [[Bogalusa, Louisiana|Bogalusa]]
}}
{{LAint|exit
|location=none
|mile=65.710
|mile2=66.387
|exit=65
|road={{jct|state=LA|LA|59|city1=Abita Springs|city2=Mandeville}}
|notes=
}}
{{LAint|exit
|location=none
|mile=68.195
|mile2=69.101
|exit=68 
|road={{jct|state=LA|LA|1088|to2=to|LA|36|city1=Mandeville}}
|notes=
}}
{{LAint|exit
|location=Lacombe
|mile=73.995
|mile2=74.773
|exit=74
|road={{jct|state=LA|LA|434|city1=Lacombe|city2=St. Tammany}}
|notes=to future [[Louisiana Highway 3241|LA 3241]]
}}
{{LAint|exit
|location=Slidell
|lspan=3
|mile=80.160
|mile2=81.149
|exit=80
|road=Airport Drive / North Shore Boulevard
|notes=To [[Slidell Municipal Airport]] and [[Camp Villere]] / [[Southeast Louisiana Veterans Cemetery]]
}}
{{LAint|exit
|mile=83.620
|mile2=84.152
|exit=83
|road={{jct|state=LA|US|11|city1=Slidell|city2=Pearl River}}
|notes=
}}
{{LAint|exit
|mile=85.375
|mile2=86.653
|exit=85
|road={{jct|state=LA|I|10|I|59|city1=New Orleans|location2=[[Bay St. Louis, Mississippi|Bay St. Louis]]|location3=[[Hattiesburg, Mississippi|Hattiesburg]]}}
|notes=Eastern terminus of I-12; southern terminus of I-59; signed as exits 85A (I-10 west), 85B (I-59) and 85C (I-10 east); exit 267B on I-10; exit 1C on I-59
}}
{{jctbtm|exit|keys=incomplete}}

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

==References==
{{reflist}}

==External links==
{{Commons category|Interstate 12}}
{{AttachedKML|display=title,inline}}
* [https://web.archive.org/web/20130526094137/http://www.dotd.la.gov/planning/mapping/home.aspx La DOTD State, District, and Parish Maps]

{{interstates}}

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[[Category:Interstate Highway System|12]]
[[Category:Interstate Highways in Louisiana|12]]
[[Category:Transportation in East Baton Rouge Parish, Louisiana]]
[[Category:Transportation in Livingston Parish, Louisiana]]
[[Category:Transportation in St. Tammany Parish, Louisiana]]
[[Category:Transportation in Tangipahoa Parish, Louisiana]]