SB I-280 Closures in SF for Fence Installation


Southbound I-280 Highway Fence Construction Project:

One Lane On I-280 SB Will Be Closed At 6 St. Onramp To Mariposa St.

Parking To Be Restricted on 7 St. Between 6 St. Onramp and the Mariposa St. Exit

Project To Begin January 18, 2022


San Francisco County - Caltrans is scheduled to begin construction work on a separation fence on Southbound Interstate-280 (SB I-280) that will help protect the residents of apartment buildings adjacent to the highway.


For public and worker safety, the following lane closures and parking restrictions will be in place from 7am to 3:30pm on weekdays:


  • Lane 3 on SB I-280 will be closed between the 6 St. onramp and the Mariposa St. exit.
  • One lane on the 6 St. onramp will be closed.

Parking will be prohibited on 7 St. from Irwin St. to Daggett St. during construction. No parking signs will be posted.

280 Fence Project Closures

During the SB I-280 lane closure and single lane closure for the I-280 6 St. onramp, motorists should be prepared for delays during the hours of 7am and 3:30  pm.

Work is scheduled to begin on January 18 and is expected to conclude by Feb. 11.

Travel on NB I-280 should not be affected by the construction.


During the lane closures Caltrans will install a chain link fence that will help protect residences next to SB I-280.

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