The 1.6-mile, six-lane roadway (Highway 101) winds through the Presidio national park, linking the city to the iconic Golden Gate Bridge. The new highway includes twin high-viaduct bridges, four tunnels, and a low viaduct interchange, with continuous shoulders and a landscaped median.
Known as Doyle Drive since it was first opened in 1936, the safer, streamlined Presidio Parkway includes local roads within the Presidio, providing a major regional traffic link between the San Francisco Peninsula and North Bay Area counties. It features numerous safety enhancements, including current seismic safety requirements, a median barrier separating north-bound and south-bound traffic, wider traffic lanes and safety shoulders.
“The project team strived to create a roadway that reduced impacts to biological, cultural and natural resources; respected the project setting within a national park, the National Historic Landmark District and the surrounding neighborhoods; met community needs; and provided a safer roadway,” said John Fisher, WSP USA’s project manager.
Pedestrians and bicyclists will also benefit from numerous new opportunities to cross over or under the parkway to access the shoreline at Crissy Field.
The Presidio Parkway was delivered in two phases, with phase I a traditional design-bid-build project and phase II a public-private partnership (P3) under a design-build-finance-operate-maintain arrangement.
“This pathfinder project is a first for California’s emerging P3 program and a model for alternative procurement in California and nationally,” Fisher says.