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Interstate 505
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{{short description|Interstate Highway in California}} {{For|the never-built spur in Portland, Oregon|Interstate 505 (Oregon)}} {{redirect|I-505|the submarine|Japanese submarine I-505}} {{Use American English|date=April 2025}} {{Use mdy dates|date=December 2022}} {{Infobox road |state=CA |type=I |route=505 |section=617 |map={{maplink-road|from=Interstate 505.map}} |map_custom=yes |map_notes=I-505 highlighted in red |length_mi=32.99 |established=1977 |spur_of=5 |spur_type=I |length_ref=<ref name=bridgelog>{{Caltrans bridgelog|date=October 2014}}</ref> |direction_a=South |terminus_a={{jct|state=CA|I|80}} in [[Vacaville, California|Vacaville]] |junction={{plainlist |*{{Jct|state=CA|SR|128}} near [[Winters, California|Winters]] *{{Jct|state=CA|SR|16}} near [[Madison, California|Madison]] }} |direction_b=North |terminus_b={{jct|state=CA|I|5}} near [[Dunnigan, California|Dunnigan]] |counties=[[Solano County, California|Solano]], [[Yolo County, California|Yolo]] |previous_type=CA |previous_route=480 |next_type=I |next_route=580 }} '''Interstate 505''' ('''I-505''') is a north–south [[List of auxiliary Interstate Highways|auxiliary Interstate Highway]] in the [[Sacramento Valley]] in [[Northern California]]. It is a [[Spur route|spur]] auxiliary route of [[Interstate 5 in California|I-5]] that runs from near [[Dunnigan, California|Dunnigan]] south to [[Interstate 80 in California|I-80]] in [[Vacaville, California|Vacaville]]. I-505 is primarily a rural Interstate, but travels through Vacaville and the city of [[Winters, California|Winters]]. The highway is the primary route connecting the [[San Francisco Bay Area]] and the northern [[Sacramento Valley]], bypassing [[Sacramento, California|Sacramento]] and its attendant city traffic. Thus, it is a major route for travelers heading directly from the San Francisco Bay Area to the [[Shasta Cascade]] and the [[Pacific Northwest]]. [[Electric power transmission|Power lines]] connecting [[Path 15]] to [[Path 66]] follow the highway for a while, until one heads [[Ordinal direction|northeast]] and the other [[Ordinal directions|northwest]]. ==Route description== The southern terminus of I-505 is at I-80 next to the [[Nut Tree Airport]] in the [[Nut Tree]] area in [[Vacaville, California|Vacaville]]. From there, it travels north about {{Convert|10|mi|km}} through rural areas near the western edge of the [[Sacramento Valley]] before reaching [[Winters, California|Winters]]. I-505 then skirts the eastern [[city limits]] of Winters, intersecting with [[California State Route 128|State Route 128]]—the only exit in Winters. After leaving that city, the Interstate then proceeds north through rural areas again for about {{Convert|20|mi|km}}, including an interchange with [[California State Route 16]] near [[Madison, California|Madison]], until it reaches its northern terminus with I-5 near [[Dunnigan, California|Dunnigan]]. For its entire length, I-505 is a four-lane freeway (two lanes in each direction) with a maximum speed limit of {{convert|70|mi/h|km/h|abbr=on}}, which is typical for rural Interstates in California. I-505 is part of the [[California Freeway and Expressway System]],<ref name="cafes">{{CAFESystem}}</ref> and is part of the [[National Highway System (United States)|National Highway System]],<ref name=fhwa-nhs>{{FHWA NHS map|region=californianorth|access-date=July 29, 2017}}</ref> a network of highways that are considered essential to the country's economy, defense, and mobility by the [[Federal Highway Administration]].<ref name=NHS-FHWA>{{FHWA NHS}}</ref> ==History== What is now I-505 was originally conceived as part of a loop Interstate with a directional suffix, I-5W.<ref name="cahighways_5">{{cite web | url=http://cahighways.org/001-008.html#005 | title=California Highways-Routes 1-8 | work=California Highways | access-date=2012-09-03}}</ref> However, I-5W and most of the other Interstates around the country with directional suffixes were eventually renumbered or eliminated, except [[Interstate 35E (disambiguation)|I-35E]] and [[Interstate 35W (disambiguation)|I-35W]] in Texas and Minnesota. [[Interstate 69|I-69]] segments [[I-69W]], [[I-69C]], and [[I-69E]] in southern Texas have since been designated as well along with proposed suffixed segments for future extensions of [[Interstate 14#Proposed extension|I-14]] and [[Interstate 27#Numbering|I-27]] to follow. The former route of I-5W now corresponds to [[Interstate 580 (California)|I-580]] from I-5 south of [[Tracy, California|Tracy]] to [[Oakland, California|Oakland]], [[Interstate 80 in California|I-80]] from Oakland to Vacaville, and I-505 from Vacaville to I-5 near Dunnigan. The northernmost section of I-505, between SR 16 in Madison and I-5 near Dunnigan, opened in August 1977.<ref>{{cite news |date=August 11, 1977 |title=I-505 Stretch In Yolo To Open |page=B2 |work=The Sacramento Bee |url=https://www.newspapers.com/clip/89608852/i-505-stretch-in-yolo-to-open/ |via=[[Newspapers.com]] |access-date=November 26, 2021}}</ref> {{-}} ==Exit list== {{CAinttop|exit|length_ref=<br><ref name="calnexus">[[California Department of Transportation]], [[California Numbered Exit Uniform System]], [http://www.dot.ca.gov/trafficops/exit/docs/505.pdf Interstate 505 Freeway Interchanges], Retrieved on 2009-02-07.</ref>|exit_ref=<br><ref name="calnexus" /> }} {{CAint|exit |county=Solano |cspan=7 |location=Vacaville |lspan=5 |mile=0.00 |mspan=3 |exit=1A |road={{Jct|state=CA|I|80|city1=San Francisco|dir1=west}} |notes=Southern terminus; I-80 exit 56 }} {{CAint|exit |type=incomplete |mile=none |exit=— |road=Orange Drive / Nut Tree Road |notes=Northbound exit (only accessible from I-80 east) and entrance }} {{CAint|exit |mile=none |exit=1B |road={{Jct|state=CA|I|80|city1=Sacramento|dir1=east}} |notes=Southbound exit and northbound entrance; provides direct access to East Monte Vista Avenue; I-80 exit 56 |type=incomplete }} {{CAint|exit |mile=1.45 |exit=1C |road=Vaca Valley Parkway |notes=Signed as exit 1 northbound }} {{CAint|exit |mile=3.06 |exit=3 |road=Midway Road }} {{CAint|exit |location=none |mile=5.57 |exit=6 |road=Allendale Road }} {{CAint|exit |location=none |mile=10.43 |exit=10 |road=Putah Creek Road }} {{CAint|exit |county=Yolo |cspan=8 |location=none |mile=11.03 |exit=11 |road={{Jct|state=CA|SR|128|name1=Grant Avenue|road|Russell Boulevard ([[County Route E6 (California)|CR E6]] east)|dir1=west|city1=Winters|city2=Davis}} |notes=Eastern terminus of SR 128; western terminus of CR E6 }} {{CAint|exit |location=none |mile=14.66 |exit=15 |road=Road 29A }} {{CAint|exit |location=none |mile=17.16 |exit=17 |road=Road 27 }} {{CAint|exit |location=none |mile=21.25 |exit=21 |road={{Jct|state=CA|SR|16|city1=Woodland|city2=Esparto}} }} {{CAint|exit |location=none |mile=24.06 |exit=24 |road=Road 19 }} {{CAint|exit |location=none |mile=28.08 |exit=28 |road=Road 14 ([[County Route E10 (California)|CR E10]]) – [[Zamora, California|Zamora]] }} {{CAint|exit |location=none |mile=30.74 |exit=31 |road=Road 12A }} {{CAint|exit |type=incomplete |location=none |mile=32.99 |exit=— |road={{Jct|state=CA|I|5|dir1=north|city1=Redding}} |notes=Northern terminus; no access to I-5 south; I-5 south exit 553 }} {{jctbtm|keys=incomplete|col=7}} ==See also== *{{portal-inline|California Roads}} ==References== {{Reflist|30em}} ==External links== {{Attached KML|display=inline,title}} {{commonscat}} {{CASR external links|I|505}} *[http://www.aaroads.com/california/i-505_ca.html California @ AARoads.com - I-505] *[http://www.cahighways.org/466-740.html#505 California Highways: I-505] {{3di|5}} [[Category:Interstate Highways in California|05-5]] [[Category:Auxiliary Interstate Highways|05-5]] [[Category:Interstate 5|5]] [[Category:San Francisco Bay Area freeways|505]] [[Category:Roads in Solano County, California|Interstate 05-5]] [[Category:Roads in Yolo County, California|Interstate 05-5]]
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