Enhancing an Oasis at the Presidio Tunnel Tops

Contributor: Swinerton Blogger   |   August 22, 2016   |   Image Gallery »
Enhancing an Oasis at the Presidio Tunnel Tops

The new Presidio Tunnel Tops is a unique project located in San Francisco, California that includes an expansive landscaped park spanning over the top of the newly built Doyle Drive tunnels. It also includes the Crissy Youth Center buildings/classrooms, a learning landscape, restroom buildings, and various site features. The Presidio Tunnel Tops is a new locus of the Presidio—one that affords magnificent 360-degree views in all directions and links the Presidio parade grounds to Crissy Field at Mason Street, south of Crissy
Field Marsh.

The historic south access road to the Golden Gate Bridge, previously known as Doyle Drive or Route 101, had reached the end of its useful life and was structurally and seismically deficient. Replacing the aging roadway was critical for traffic safety and also provided an opportunity for major design improvements.  Doyle Drive has been re-envisioned as the Presidio Parkway—a roadway tucked into the natural contours of the Presidio and the Golden Gate National Recreation Area. The approximately 14-acre Presidio Tunnel Tops project extends over the top of these recently constructed tunnels and includes extensive native landscaping, specialty paving, recreational elements, and intricate site structures. 

Preconstruction is currently well underway at the Presidio Tunnel Tops project. In addition to providing constructability analysis, construction sequencing, budget, and schedule feedback, Swinerton has aided the Presidio Trust and its design team on optimal turnover conditions related to completion of the Doyle Drive project by Caltrans and its contractor.

Due to multiple agency involvement and the unique nature of the Presidio Trust, several committees have been formed and the Presidio Trust has utilized an extensive community input process to determine how the new Park should function and identify critical project elements. Swinerton was brought onboard early in the design process to provide construction expertise. Construction is anticipated to begin in mid-2017.

For more information about the Presidio Trust and the Presidio Tunnel Tops project visit, http://presidiotunneltops.org and www.presidioparkway.org

Congratulations to the team: Paul Rodriguez, Scott Vion, Elizabeth Messana, Dale Molyneux, E.J. Silvia, and Patrick Driscoll.