Project Overview
The $851 million Presidio Parkway project replaced Doyle Drive, a 1.6-mile, east-west segment of Route 101 that serves as the access route to the Golden Gate Bridge in San Francisco. The roadway traverses the Presidio of San Francisco, one of the nation's largest urban parks, and provides a major regional traffic link between the San Francisco Peninsula and North Bay counties. Built in 1936, Doyle Drive did not meet current highway standards and was at risk of damage in the event of an earthquake. |
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The Presidio Parkway extends from the Golden Gate Bridge Toll Plaza to Broderick Street in San Francisco's Marina District. The roadway will provide three lanes in each direction and an eastbound auxiliary lane serving merging traffic along most of its length. A landscaped median will separate the east and westbound lanes to improve safety and aesthetics. Moving eastward from the toll plaza, the roadway will be made up of a high-level viaduct, two sets of cut-and-cover tunnels, at-grade sections, and a low-level viaduct.
In addition to meeting current design, seismic, and safety standards, the project is also intended to improve access to the Presidio, Golden Gate National Recreation Area, and surrounding neighborhoods, while reducing traffic impacts on the park, local monuments, and the natural environment.