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Northbound U.S. 101 Vermont St. Offramp Overnight Closures December 1-5

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San Francisco County – The Caltrans U.S. 101 (Hospital Curve) Rehabilitation Project, underway since October 2025, will require the temporary, nighttime closure of the Vermont St. offramp from the northbound U.S. 101 freeway, the week of December 1.  The closures are necessary for construction crew to safely access work sites and are limited to two nights between Monday and Friday. Motorists on NB U.S.101 are advised to use the 7th St. offramp and proceed to Bryant St.  Motorists will then take a right on to 6th St, a right on to Brannon St., and a left on to 7th St. Travel South on 7th St. and continue to Mississippi St. Proceed down Mississippi St. and take a right turn on to Mariposa St. Drive down Mariposa St. and take a right turn on to Vermont St. 

The U.S. 101 (Hospital Curve) Rehabilitation Project will improve 15.4 lane miles of concrete pavement, upgrade drainage systems, and rehabilitate median barrier between Candlestick Point Recreation Area and the Mission District in San Francisco. The project is expected to be completed in 2028.

Included in the rehabilitation will be repaving of the freeway on- and off- ramps, new signage, striping, and safety devices. With the completed project, motorists will experience a noticeably smoother driving experience with fewer rough patches and road bumps. Throughout the construction period, motorists can expect substantial night work, incurring major delays driving north- and southbound on the U.S. 101 between Candlestick Point Recreation Area to the Mission District. The project will extend the lifespan of this 70-year-old roadway, minimizing the need for frequent repairs and reducing future disruptions to commuters.

What to Expect

  • Major Delays: Motorists should plan for full time narrowed lanes, reduced speed through the work zone, frequent night work with closed lanes, and, starting in late 2026 through mid-2027, occasional full freeway weekend closures.
  • Construction will take place mostly during nighttime hours when traffic congestion is less
  • Noise: Pavement and barrier rail demolition is necessary to complete the work. Caltrans is working with the Contractor to mitigate noise as much as possible.
  • Plan Ahead: Up-to-date schedules will be posted at www.sfhighwayprojects.com.
  • Avoid the Work Zone: Motorists are strongly encouraged to avoid the corridor during nighttime and weekend work.

Use Public Transportation: San Francisco remains open for business-as-usual. Transit is the best option to bypass closures.

Traffic Impact

The traffic impact throughout construction will be significant. Motorists and commuters will experience traffic delays, slowed traffic, and freeway congestion. Lane width reductions are necessary to provide areas for work in the shoulders to occur. This project is located along sections where there is very limited roadway shoulder access. Lane closures will help safeguard work crews who will be working along these sections of the freeway.

The posted speed limit will be reduced through the work zone. Motorists are advised to use alternate routes or take public transit from approximately 9 p.m. to 7:00 a.m.

During full weekend closures, motorists should plan to use public transportation to reach their destinations and avoid the area altogether.

To help motorists plan for traffic disruption, Caltrans posts and updates detour maps, vicinity maps, and simulation detour videos at sfhighwayprojects.com.

Work Schedule

The Contractor’s work schedule will be night times Monday-Friday approximately 9 p.m. to 7 a.m. Friday/Saturday schedules are approximately 11 p.m. to 8 a.m. Saturday/Sunday schedules are approximately 11 p.m. to 9 a.m. There will be four full freeway, full weekend closures, two in each direction.

Project Timeline and Location

Location 1: Work began in October 2025 with lanes in both directions shifted and the outside shoulder closed to allow drainage systems replacement. When the outside shoulder work is completed, work will shift to the center median to complete the drainage systems replacement. When the drainage work is complete, pavement reconstruction will occur during four full freeway full weekend closures, two in each direction. This will be followed by a series of full weekend lane closures for new center median barrier construction. The work is estimated to be completed in early 2028.

Location 2: Work begins in Fall 2026 and continues to late Spring 2027. Work is mostly limited to the center median for drainage system upgrades and median barrier replacement. There will be some isolated concrete pavement slab repairs.

Location 3: Work begins in Spring 2027 and continues to Fall 2027. Work is mostly limited to the center median for drainage system upgrades and median barrier replacement. There will be some isolated concrete pavement slab repairs.

Stay Informed

Please visit Caltrans www.sfhighwayprojects.com, QuickMap: http://quickmap.dot.ca.gov or follow Caltrans on Twitter at: https://twitter.com/CaltransD4

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