Caltrans is in the midst of a construction project on the Richardson Bridge project that will impact the northbound lanes to replace “the existing asphalt concrete bridge deck surface with polyester concrete in both the northbound and southbound directions of US-101 at Richardson Bay Bridge. The closure starts near the Rodeo Avenue off-ramp and ends right before the Seminary Drive off-ramp.
Grinding of the asphalt and placing polyester concrete overlay started Sunday, Sept. 25:
- The two far-right lanes (No. 4 and 5 lanes) will be closed from 5pm until 8am.
- The three left lanes (No. 1, 2 and 3) will remain open. The closure starts near the Rodeo Avenue off-ramp and ends right before the Seminary Drive off-ramp.
- Drivers should expect delays in the evening hours and use alternate routes like the San Rafael/Richmond Bridge and the Bay Bridge if possible.
The project will continue with grinding of the asphalt and placing of the polyester concrete on Monday, September 26, through Friday, September 30, from 8 p.m. until 8 a.m. each day. There should be minimal delays due to the time of construction.
The bicycle lane on the US-101 northbound shoulder will be shut down during construction hours. Cyclists should take a detour to US-101 southbound onto the Mill Valley Sausalito bike path, take a right on Hamilton Drive and a left on Redwood Highway Frontage Road. Detour signs have been posted.
Residents in the area may experience noise and some dust due to the work. The need for the project is to preserve the existing bridge and to decrease the probability of costly repairs in the future.
Changeable message and directional signs will be in place to assist motorists traveling in the area. The California Highway Patrol (CHP) will be on-site during the closures.