San Francisco — Presidio Parkway, a state-of-the-art roadway through San Francisco’s Presidio, opened to traffic on July 12. The 1.6-mile, six-lane roadway (three lanes in each direction), which winds through the Presidio, a national park, and leads to the Golden Gate Bridge, includes twin high-viaduct bridges, four tunnels, and a low-viaduct interchange, with continuous shoulders and a landscaped median.
Doyle Drive (Highway 101), built in 1936, is now re-envisioned as the safer and streamlined Presidio Parkway. The new roadway features numerous safety enhancements, including current seismic safety requirements, a median barrier separating north- and south-bound traffic, wider traffic lanes and safety shoulders.
Parsons Brinckerhoff has been involved with the Presidio Parkway for 16 years in a number of planning, design, and advisory roles on behalf of the San Francisco County Transportation Authority and the California Department of Transportation (Caltrans). Beginning in 1999, Parsons Brinckerhoff served as lead consultant to the Authority for an environmental and design study that considered various alternatives for replacing Doyle Drive. The firm produced an environmental impact statement/report that was approved in 2008.
Beginning in 2007, Parsons Brinckerhoff, in joint venture with Arup, provided final design and construction services in joint venture for the Authority on behalf of Caltrans.
Most recently, the Parsons Brinckerhoff/Arup joint venture served as advisor to the Authority and Caltrans for the final phase of the project, beginning in 2010, which was delivered by a public-private partnership (P3) led by Golden Link Concessionaire LLC. The Parsons Brinckerhoff/Arup joint venture continues to provide technical and financial advisory services to the Authority and Caltrans throughout the P3 phase of the project. Golden Link designed, built, and financed the completion of the roadway and will operate and maintain it on behalf of Caltrans for the next 30 years.