Editing U.S. Route 101 (section)

===Modern projects===

The final traffic signal on the {{convert|435|mi|km|adj=mid}} section of US&nbsp;101 between Los Angeles and San Francisco, located at Anacapa Street in Santa Barbara, was removed in November 1991.<ref>{{cite news |last=Feldman |first=Paul |date=November 19, 1991 |title=Lights out on an era |page=A3 |url=https://www.latimes.com/archives/la-xpm-1991-11-19-mn-82-story.html |work=Los Angeles Times |accessdate=August 2, 2023 |archive-date=August 3, 2023 |url-status=live |archive-url=https://web.archive.org/web/20230803060043/https://www.latimes.com/archives/la-xpm-1991-11-19-mn-82-story.html}}</ref> The removal was spurred by the construction of a freeway through Santa Barbara, which was completed the following year and bypassed four signalized intersections.<ref>{{cite news |last=Cannon |first=Lou |date=November 24, 1991 |title=Pulling out all the stops on U.S. 101 |page=A22 |url=https://www.washingtonpost.com/archive/politics/1991/11/24/letter-from-california/a5cde413-d999-454d-b0dd-1745a5575d32/ |newspaper=The Washington Post |accessdate=August 2, 2023}}</ref> The Central Freeway's northernmost leg in San Francisco was demolished in the early 2000s after it had sustained damage in the [[1989 Loma Prieta earthquake]], which required the upper deck to be removed in 1997.<ref>{{cite news |last=Minton |first=Torri |date=April 12, 1997 |title=S.F. freeway reopening 2 days early |page=A1 |url=https://www.sfgate.com/news/article/PAGE-ONE-S-F-Freeway-Reopening-2-Days-Early-2846258.php |work=San Francisco Chronicle |accessdate=August 6, 2023 |archive-date=August 7, 2023 |url-status=live |archive-url=https://web.archive.org/web/20230807025844/https://www.sfgate.com/news/article/PAGE-ONE-S-F-Freeway-Reopening-2-Days-Early-2846258.php}}</ref> A portion of the corridor was replaced by [[Octavia Boulevard]], which opened in 2005, while US&nbsp;101 was rerouted onto Van Ness Avenue further east.<ref name="google"/><ref>{{cite news |last=King |first=John |date=January 3, 2007 |title=An urban success story: Octavia Boulevard an asset to post-Central Freeway area |page=B1 |url=https://www.sfgate.com/bayarea/place/article/SAN-FRANCISCO-An-urban-success-story-Octavia-2659608.php |work=San Francisco Chronicle |accessdate=August 6, 2023 |archive-date=August 7, 2023 |url-status=live |archive-url=https://web.archive.org/web/20230807025847/https://www.sfgate.com/bayarea/place/article/SAN-FRANCISCO-An-urban-success-story-Octavia-2659608.php}}</ref> From 2016 to 2022, Van Ness Avenue was rebuilt by the [[San Francisco Municipal Railway]] to add center bus lanes and landscaped medians as part of the [[Van Ness Bus Rapid Transit]] project.<ref>{{cite news |last=Cano |first=Ricardo |date=March 25, 2022 |title=It took 27 years and $300 million. Will S.F. Van Ness BRT improve traffic congestion? |url=https://www.sfchronicle.com/sf/article/S-F-s-Van-Ness-transit-project-is-ready-after-17027218.php |work=San Francisco Chronicle |accessdate=August 6, 2023 |archive-date=August 7, 2023 |url-status=live |archive-url=https://web.archive.org/web/20230807025844/https://www.sfchronicle.com/sf/article/S-F-s-Van-Ness-transit-project-is-ready-after-17027218.php}}</ref>

Several existing freeway sections in California were expanded to add [[high-occupancy vehicle lane]]s (HOV lanes) beginning in the 1980s to address increased congestion, especially in the San Francisco Bay Area.<ref>{{cite news |last=Richards |first=Gary |date=February 5, 1995 |title=Bay Area drivers turn the corner on carpooling |page=1A |work=The Mercury News}}</ref><ref>{{cite news |last=Cabanatuan |first=Michael |date=July 13, 2016 |title=Officials try to untangle commute on Hwy. 101 on Peninsula |url=https://www.sfchronicle.com/bayarea/article/8-9-million-shifted-to-begin-studies-of-express-8376933.php |work=San Francisco Chronicle |accessdate=August 6, 2023 |archive-date=August 7, 2023 |url-status=live |archive-url=https://web.archive.org/web/20230807050750/https://www.sfchronicle.com/bayarea/article/8-9-million-shifted-to-begin-studies-of-express-8376933.php}}</ref> By 1984, a section in Marin County had been opened to traffic;<ref>{{cite news |last=Willis |first=Doug |date=February 15, 1984 |title=California freeways of future to be crowded, computerized |page=B1 |work=News-Pilot |agency=Associated Press}}</ref> it was followed by sections in San Mateo and Santa Clara counties that were funded by a sales tax approved in a 1984 ballot measure.<ref>{{cite news |last=Lapin |first=Lisa |date=December 16, 1989 |title=Carpool cheats peeve P.A. leaders |page=B1 |work=The Mercury News}}</ref> The HOV lanes were extended south through San Jose to Bernal Road in 1990.<ref>{{cite news |date=June 8, 1990 |title=Commute crunch eases a bit today |page=B1 |work=The Mercury News}}</ref> A {{convert|16|mi|km|adj=mid}} section of the existing HOV lanes from [[Redwood City, California|Redwood City]] to [[San Bruno, California|San Bruno]] was converted to [[high-occupancy toll lane]]s in 2023 with the use of [[electronic toll collection]].<ref>{{cite news |last=Echeverria |first=Danielle |date=March 6, 2023 |title=New 101 express lanes just opened in this part of the Bay Area. But they'll cost you |url=https://www.sfchronicle.com/bayarea/article/highway-101-toll-express-lanes-17817990.php |work=San Francisco Chronicle |accessdate=February 8, 2024 |archive-date=February 8, 2024 |url-status=live |archive-url=https://web.archive.org/web/20240208080921/https://www.sfchronicle.com/bayarea/article/highway-101-toll-express-lanes-17817990.php}}</ref><ref>{{cite news |last=Cabanatuan |first=Michael |date=November 1, 2022 |title=New Bay Area express lanes on Hwy. 101 are opening. Here's how you can buy your way into them |url=https://www.sfchronicle.com/bayarea/article/new-bay-area-express-lanes-on-hwy-101-are-17547756.php |work=San Francisco Chronicle |accessdate=February 8, 2024 |archive-date=February 8, 2024 |url-status=live |archive-url=https://web.archive.org/web/20240208080920/https://www.sfchronicle.com/bayarea/article/new-bay-area-express-lanes-on-hwy-101-are-17547756.php}}</ref>

[[File:Oregon Coast Highway Washout.jpg|thumb|right|A washed-out section of US&nbsp;101 near [[Newport, Oregon]], in 2013|alt=The remains of an asphalt road that has been destroyed with several pieces lifted up from the ground and others with large cracks.]]

Sections of US&nbsp;101 in Oregon have been rebuilt or relocated due to erosion or landslides that caused considerable damage to the highway.<ref name="OPB-Riprap"/><ref>{{cite news |last=Theen |first=Andrew |date=March 1, 2019 |title='Dramatic' landslide still blocking U.S. 101 north of Brookings |url=https://www.oregonlive.com/commuting/2019/02/dramatic-landslide-still-blocking-us-101-north-of-brookings.html |work=The Oregonian |accessdate=May 4, 2024}}</ref> The use of [[riprap]] to reinforce new sections of the roadway was banned by the [[Oregon Department of Land Conservation and Development]] in 1977 due to its effect on beach degradation. An effort to repeal the ban and rebuild sections of US&nbsp;101 began in 2002 and resulted in an amendment in 2022.<ref name="OPB-Riprap"/><ref name="LCL-Patch">{{cite news |last=Card |first=Steve |date=March 16, 2024 |title=Another patch on the road |url=https://www.newportnewstimes.com/news/another-patch-on-the-road/article_226f0d38-e0c1-11ee-ba02-87b39999b012.html |work=[[Lincoln County Leader]] |location=Newport, Oregon |accessdate=May 4, 2024}}</ref> Several sections of US&nbsp;101 between Newport and Lincoln City are identified as persistent sunken grade and rockfall areas in need of frequent repairs.<ref name="LCL-Patch"/> Other portions of the highway in southwestern Oregon had landslide and subsidence issues, including a section in [[Harbor, Oregon|Harbor]] that was closed for several weeks in early 2016 by an {{convert|80|ft|m|adj=mid}} [[sinkhole]].<ref>{{cite news |last=Chokshi |first=Niraj |date=January 30, 2016 |title=A 'monster' 80-foot sinkhole closed a stretch of coastal highway in Oregon |url=https://www.washingtonpost.com/news/post-nation/wp/2016/01/29/its-a-monster-for-sure-sinkhole-closes-part-of-oregon-highway/ |newspaper=The Washington Post |url-access=subscription |accessdate=May 5, 2024}}</ref><ref>{{cite news |last=Stebbins |first=Jane |date=February 13, 2016 |title=Highway 101 lane reopens as sinkhole fix continues |url=https://infoweb.newsbank.com/apps/news/document-view?p=WORLDNEWS&docref=news/15B0AFD89D45E198&f=basic |work=[[Curry Coastal Pilot]] |location=Brookings, Oregon |via=[[NewsBank]] |accessdate=May 5, 2024}}</ref>

Severe erosion of the highway along the [[Hoh River]] in Washington was addressed through the construction of eight engineered [[logjam]]s by the [[Washington State Department of Transportation]] in 2004. The project redirected the river's flow through the use of dense piles of [[spruce]] logs reinforced by steel piles; the highway previously underwent four emergency repairs in the area that included installation of riprap and other conventional materials.<ref>{{cite news |last=Downing |first=Jim |date=August 16, 2004 |title=Giant logjams built to protect highway |url=https://archive.seattletimes.com/archive/?date=20040816&slug=hoh16m |work=The Seattle Times |accessdate=May 4, 2024}}</ref><ref>{{cite journal |last1=Hall |first1=Megan |last2=Moler |first2=Steve |date=January 2006 |title=Mimicking Mother Nature |url=https://highways.dot.gov/public-roads/januaryfebruary-2006/mimicking-mother-nature |journal=Public Roads |volume=69 |issue=4 |publisher=Federal Highway Administration |accessdate=May 4, 2024}}</ref> US&nbsp;101 was relocated onto an expressway bypass of [[Sequim, Washington]], in August 1999 that replaced a congested route on the city's main street, Washington Avenue. The {{convert|4.4|mi|km|adj=mid}} project cost $40.7&nbsp;million (equivalent to ${{Format price|{{Inflation|US-GDP|40700000|1999}}}} in {{Inflation-year|US-GDP}} dollars){{inflation-fn|US-GDP}} to construct and included the installation of [[warning signal]]s triggered by the presence of nearby [[Roosevelt elk]] wearing [[Wildlife radio telemetry|radio collars]] for tracking.<ref>{{cite news |last=Erb |first=George |date=August 15, 1999 |title=Sequim is ready for traffic bypass operation |url=https://www.bizjournals.com/seattle/stories/1999/08/16/newscolumn1.html |work=[[Puget Sound Business Journal]] |url-access=subscription |accessdate=May 5, 2024}}</ref><ref>{{cite news |last=Egan |first=Timothy |author-link=Timothy Egan |date=January 2, 2001 |title=Elk that call ahead to cross the highway |url=https://www.nytimes.com/2001/01/02/us/sequim-journal-elk-that-call-ahead-to-cross-the-highway.html |work=The New York Times |url-access=limited |accessdate=May 5, 2024}}</ref> The {{convert|15|mi|km|adj=mid}} section of the highway between Port Angeles and Sequim was widened to four lanes in November 2014 following a two-year project to fill the final, {{convert|3.5|mi|km|adj=mid}} gap.<ref>{{cite news |last=Ollikainen |first=Rob |date=November 10, 2014 |title=U.S. Highway 101, now with four lanes open, speeds up local mobility |url=https://www.peninsuladailynews.com/news/u-s-highway-101-now-with-four-lanes-open-speeds-up-local-mobility/ |work=Peninsula Daily News |accessdate=May 5, 2024}}</ref> The {{convert|12|mi|km|adj=mid}} section west of Port Angeles along Lake Crescent was rehabilitated from 2017 to 2019 to repave the roadway and repair structures—among them retaining walls and guardrails.<ref>{{cite news |last=Leach |first=Leah |date=November 29, 2019 |title=Three-year project on Highway 101 comes to a close |url=https://www.peninsuladailynews.com/news/three-year-project-on-highway-101-comes-to-a-close/ |work=Peninsula Daily News |accessdate=May 5, 2024}}</ref>

A {{convert|6|mi|km|adj=mid|spell=in}} freeway bypass of [[Willits, California]], for the Redwood Highway opened in November 2016 at a cost of $460&nbsp;million (equivalent to ${{Format price|{{Inflation|US-GDP|460000000|2015}}}} in {{Inflation-year|US-GDP}} dollars).{{inflation-fn|US-GDP}}<ref>{{cite news |last=Anderson |first=Glenda |date=November 3, 2016 |title=Willits Highway 101 bypass finally opens to traffic |url=https://www.pressdemocrat.com/article/news/willits-highway-101-bypass-finally-opens-to-traffic/ |work=The Press Democrat |accessdate=August 2, 2023 |archive-date=March 16, 2024 |url-status=live |archive-url=https://web.archive.org/web/20240316074055/https://www.pressdemocrat.com/article/news/willits-highway-101-bypass-finally-opens-to-traffic/}}</ref> The bypass was expected to divert away tourists and cause a drop in local [[sales tax]] revenue due to lost traffic.<ref>{{cite news |last=Thomas |first=Eric |date=July 4, 2017 |title=Willits in Mendocino County fights to keep tourists coming back as new freeway bypass threatens business |url=https://abc7news.com/willits-bypass-hidden-freeway-costs-cost/2182455/ |publisher=[[KABC-TV|ABC 7]] |accessdate=August 2, 2023 |archive-date=August 3, 2023 |url-status=live |archive-url=https://web.archive.org/web/20230803060458/https://abc7news.com/willits-bypass-hidden-freeway-costs-cost/2182455/}}</ref> A portion of US&nbsp;101 in the North Bay region near San Francisco, nicknamed the "Novato Narrows", was widened to three lanes with the addition of an HOV lane; construction on the {{convert|5|mi|km|adj=mid}} section began in 2011 and is scheduled to be completed in 2026.<ref>{{cite news |last=Cabantuan |first=Michael |date=July 22, 2022 |title=This traffic-choked section of Highway 101 has been under construction for two decades. Here's when it will wrap up |url=https://www.sfchronicle.com/bayarea/article/This-traffic-choked-section-of-Highway-101-has-17322944.php |work=San Francisco Chronicle |accessdate=July 28, 2023 |archive-date=July 28, 2023 |url-status=live |archive-url=https://web.archive.org/web/20230728082920/https://www.sfchronicle.com/bayarea/article/This-traffic-choked-section-of-Highway-101-has-17322944.php}}</ref> A four-phase widening through the Santa Barbara area to add a third lane in each direction began construction in 2008. Its final phase is estimated to cost $700&nbsp;million and be completed in 2027.<ref>{{cite news |last=Yamamura |first=Jean |date=April 2, 2020 |title=Highway 101 Widening Begins Final Phase in Carpinteria |url=https://www.independent.com/2020/04/02/highway-101-widening-begins-final-phase-in-carpinteria/ |work=[[Santa Barbara Independent]] |accessdate=May 23, 2024}}</ref><ref>{{cite news |last=Barnes |first=Kathryn |date=March 8, 2017 |title=Where is Santa Barbara's commuter train?  |url=https://www.kcrw.com/news/articles/where-is-santa-barbaras-commuter-train |publisher=[[KCRW]] |accessdate=May 23, 2024}}</ref> The world's largest urban [[wildlife crossing]], named the [[Wallis Annenberg Wildlife Crossing]], is under construction over US&nbsp;101 in [[Agoura Hills, California]], and is scheduled to open in 2025.<ref>{{cite news |last=Mossburg |first=Cheri |date=April 26, 2022 |title=Construction starts on world's largest wildlife crossing to let animals roam over 10 lanes of L.A. highway |url=https://www.cnn.com/2022/04/23/us/california-wildlife-crossing-scn-trnd/index.html |publisher=[[CNN]] |accessdate=August 3, 2023 |archive-date=August 4, 2023 |url-status=live |archive-url=https://web.archive.org/web/20230804063938/https://www.cnn.com/2022/04/23/us/california-wildlife-crossing-scn-trnd/index.html}}</ref>