Larkspur City Seal Larkspur Public Works, Engineering Division
Larkspur Bridge Rehabilitation Program

photo of Bon Air Bridge (click for larger view) Bon Air Bridge
The City of Larkspur is home to three bridges connecting Magnolia Avenue to streets to the east: the Bon Air Bridge, the Doherty Drive Bridge, and the Alexander Avenue Bridge. Over time, each has been damaged by wear or by tidal action, and has been repaired or retrofitted to varying degrees. Additionally, over the last 50 years, safety standards for the design of bridges and access to them have changed. All of these factors have contributed to Caltrans declaring the bridges "Structurally Deficient."

The City of Larkspur intends to repair, retrofit, and/or replace these three local bridges, under the Federal Highway Bridge Rehabilitation and Replacement (HBRR) program. For minutes of past meetings and notices of future meetings regarding this project, see the Project Calendar.

photo of Doherty Drive Bridge  (click for larger view) Doherty Drive Bridge
Each bridge will be planned, designed, and constructed separately. Bridge-specific issues for the three structures vary, as the structures are different in their local significance, utility, environmental settings, and repair/retrofit/replacement considerations. The Alexander Avenue Bridge is on the National Register of Historic Places and requires special processes and design considerations. For this reason, work on the Bon Air and Doherty Bridges, including design, engineering and construction, will occur before that for the Alexander Bridge.
photo of Alexander Avenue Bridge (click for larger view)
Alexander Avenue Bridge

The planned schedule for the project is for technical, environmental, and design studies to take place in 2008; detailed structural design activities to occur in 2009; and actual construction to start after mid-2010. The Alexander Bridge project will proceed at a later schedule than the other bridges.

If you have any questions related to the Alexander Avenue Bridge project, please check our Questions & Answers page. If you have further questions, mail them to Larkspur Public Works at Larkspur City Hall, call Larkspur Public Works at 415.927.5017, or email publicworks@larkspurcityhall.org. All questions arriving by August 12th will be responded to on this site. Responses to questions asked after August 12th may be posted here, and will definitely be answered at the August 26th meeting.

Click on the desired links below for specific information on each bridge.

Bon Air Bridge Doherty Drive Bridge Alexander Avenue Bridge
   Fact Sheet
   Fact Sheet    Fact Sheet
   Design Images    Design Images    Design Images
   Questions & Answers

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