Doyle Drive serves as a vital south access road to the iconic Golden Gate Bridge in San Francisco, CA. The road was originally built in 1936. After years of heavy use it is now structurally and seismically deficient and must be replaced.
The Presidio Parkway Project will replace Doyle Drive and dramatically change the corridor. The first phase of the project is already underway. It involves the construction of:
- The Presidio Viaduct (one of two new viaducts)
- One of four cut-and-cover tunnels
- An at-grade temporary bypass at the eastern end of the project
Planning for the construction of the new Presidio Viaduct involved multiple design charrettes to gather input from stakeholders. This feedback was used to develop design and architectural criteria, which dictated that the new Viaduct:
- Remain subordinate to the Golden Gate Bridge in scale and size
- Maintain continuity by using similar light poles and see-through bridge rails
- Enhance view of the San Francisco Bay by minimizing the number of columns
- Use both concrete and steel materials in construction
The Presidio Parkway Project website offers many resources to learn more about the project, including before and after renderings of the corridor – just click on the rendering photos and slide the bar to see the transformation!
Rendering of the Presidio Viaduct by Caltrans via ASPIRE Magazine, Winter 2012 issue.