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Highway 101 construction may affect traffic to/from SFO

San Mateo 101 Express Lanes Project 
Caltrans is constructing express lanes on U.S. 101 from Redwood City to I-380 in South San Francisco.  During the project, freeway lane and ramp closures will occur on northbound and southbound U.S. 101. At times, lanes and exits at or near SFO will be impacted. Most work is scheduled to take place between 8:00 p.m. and 6:00 a.m., Sunday through Thursday. Closures will be marked by roadway signage, with detour signs posted.

The following closures will take place from 7:00 p.m. through 6:00 a.m.

  • Monday, 9/28 the Northbound 101 SFO Off-Ramp
  • Tuesday, 9/29 the Southbound 101 SFO Off-Ramp
  • Wednesday, 9/30 the Southbound 101 SFO Off-Ramp

Detours will be in place.

Please view Caltrans’ construction schedule for closure information and plan any travel to/from SFO accordingly.