{{short description|Highway in California, US}} {{Redirect|CA 27|the congressional district|California's 27th congressional district}} {{Use American English|date=May 2025}} {{Use mdy dates|date=March 2024}} {{Infobox road |state=CA |type=SR |route=27 |section=327 |maint=Caltrans |map={{maplink-road|from=Topanga Canyon Boulevard.map}} |map_custom=yes |map_notes=SR 27 highlighted in red |alternate_name=Topanga Canyon Boulevard |length_mi=19.974 |length_round=3 |length_ref=<ref name=trucklist/> |established=1963<ref name=trucklist/> |tourist=24px|alt=|link= Topanga Canyon Boulevard through Topanga Canyon |direction_a=South |terminus_a={{jct|state=CA|SR|1}} at Topanga State Beach |junction={{jct|state=CA|US|101}} in Woodland Hills |direction_b=North |terminus_b={{jct|state=CA|SR|118}} in Chatsworth |counties=Los Angeles |previous_type=SR |previous_route=26 |next_type=SR |next_route=28 }} '''State Route 27''', commonly known by its street name '''Topanga Canyon Boulevard''' ({{IPAc-en|t|ə|ˈ|p|æ|ŋ|ɡ|ə|audio=En-us-Topanga.ogg}}), is a state highway in the U.S. state of California that runs from the Pacific Coast Highway (California State Route 1) at Topanga State Beach near Pacific Palisades, through the Topanga Canyon in Topanga, and continuing through Woodland Hills, Canoga Park, West Hills, and Chatsworth to the Ronald Reagan Freeway (State Route 118).
As one of the only routes across the Santa Monica Mountains, SR 27 is heavily traveled by commuters from the western San Fernando Valley heading to Santa Monica or Interstate 10.<ref>{{Cite news |last=Sternfield |first=Marc |date=2024-03-26 |title=Topanga Canyon still ‘too dangerous’ to reopen |url=https://ktla.com/news/local-news/what-is-going-on-with-topanga-canyon/ |access-date=2024-03-27 |work=KTLA |language=en-US}}</ref>
==Route description== [[File:SR27 Topanga Canyon Blvd from Stoney.jpg|thumb|left|SR 27 looking south from Stoney Point]]
SR 27 begins at SR 1 near the Pacific Ocean at Topanga County Beach, in an unincorporated area of Los Angeles County east of Malibu. It travels north as Topanga Canyon Boulevard, cutting through Topanga State Park. Upon exiting the park, SR 27 provides access to Fernwood, Topanga, Sylvia Park, and Glenview, all unincorporated. SR 27 continues winding into the San Fernando Valley, nearly entering Calabasas before entering the Los Angeles community of Woodland Hills. The route becomes a major city arterial through the valley, intersecting US 101 before entering Warner Center and Canoga Park. After traversing Chatsworth, SR 27 ends just past an interchange with the SR 118 freeway, thus providing access to the unincorporated area north of Chatsworth.<ref name="latg">{{cite map|year=2008|title=Los Angeles County Road Atlas|publisher=Thomas Brothers}}</ref>
A segment of Metro Local line 150 runs on Topanga Canyon Boulevard between Ventura Boulevard and Devonshire Street.{{cn|date=January 2013}} The Topanga Canyon Beach Bus, operated by the Los Angeles County Department of Public Works, runs on the southern portion of SR 27. It has numerous stops between Warner Center to downtown Santa Monica, including stops in Topanga along SR 27.<ref>{{Cite web |title=Warner Center-San Fernando Valley/Santa Monica beach bus via Topanga Canyon |url=https://pw.lacounty.gov/transit/TopangaBeachBus |access-date=2024-09-22 |website=pw.lacounty.gov}}</ref>
Except for a small portion in the mountains, SR 27 is part of the National Highway System,<ref name=fhwa-nhs>{{FHWA NHS map|region=losangeles|access-date=October 18, 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> SR 27 is eligible for the State Scenic Highway System.<ref name="scenic">{{CA scenic}}</ref> A portion of it through Topanga Canyon has been officially designated as a scenic highway by the California Department of Transportation.<ref name="caltransscenic">{{Caltrans scenic|access-date=October 18, 2017}}</ref><ref>{{cite web|url=http://www.malibutimes.com/news/article_7c478292-b43e-11e7-8019-07a32dc36b08.html|title=Topanga Canyon Boulevard Named State Scenic Highway|first=Jimy |last=Tallal |newspaper=The Malibu Times|date=October 20, 2017|access-date=21 October 2017}}</ref>
==History== The original state highway system in 1933 included a highway from near Topanga Beach to Montalvo-San Fernando Road near Chatsworth.<ref>{{cite CAstat|year=1933|ch=767}}</ref> Two years later, this was numbered as Route 156.<ref>{{cite CAstat|year=1935|ch=274}}</ref> The route was redesignated as SR 27 in the 1964 state highway renumbering.<ref>{{cite CAstat|year=1963|ch=385}}</ref>
==Major intersections== {{CAinttop|county=Los Angeles|post_ref=<br><ref name=trucklist /><ref name=bridgelog>{{Caltrans bridgelog|date=July 2007}}</ref><ref>California Department of Transportation, [http://traffic-counts.dot.ca.gov/ All Traffic Volumes on CSHS], 2005 and 2006</ref> }} {{CAint |location=none |postmile=0.00 |road={{Jct|state=CA|SR|1|name1=Pacific Coast Highway|city1=Malibu|city2=Santa Monica}} |notes=South end of SR 27; former US 101 Alt. }} {{CAint |location=Los Angeles |lspan=8 |postmile=11.06 |road=Mulholland Drive |notes=Former SR 268 }} {{CAint |postmile=12.28 |road=Ventura Boulevard |notes=Former US 101 and US 101 Bus. }} {{CAint |postmile=12.43 |road={{Jct|state=CA|US|101|name1=Ventura Freeway|city1=Ventura|city2=Los Angeles}} |notes=Interchange; US 101 north exits 27A-B, south exit 27 }} {{CAint |postmile=none |road=Victory Boulevard |notes= }} {{CAint |postmile=18.63 |road=Devonshire Street – San Fernando |notes=Former SR 118 east }} {{CAint |postmile=none |road=Santa Susana Pass Road |notes=Former SR 118 west }} {{CAint |postmile=20.06 |road={{Jct|state=CA|SR|118|name1=Ronald Reagan Freeway}} |notes=Interchange; north end of SR 27; SR 118 exit 34 }} {{CAint |postmile=20.06 |road=Poema Place |notes=Continuation beyond SR 118 }} {{Jctbtm}}
==See also== *{{portal-inline|California Roads}} *{{portal-inline|Greater Los Angeles}}
==References== {{Reflist|30em}}
==External links== {{Attached KML|display=inline,title}} {{commonscat}} {{CASR external links|SR|27}} *[http://www.cahighways.org/025-032.html#027 California Highways: SR 27] *[http://www.aaroads.com/california/ca-027.html California @ AARoads.com - State Route 27]
{{Streets in Los Angeles}}
Category:State highways in California Category:State Scenic Highway System (California) Category:Roads in Los Angeles County, California Category:Streets in the San Fernando Valley Category:Santa Monica Mountains Category:Streets in Los Angeles