One hundred percent of tree material removed during the preconstruction activity was recycled or salvaged by Green Waste Recycle Yard in Richmond, California.
More than 50 native plant species, for a total of 45,000 plants, were collected in the Presidio prior to constriction and are now being grown in the Presidio Nursery.
Many of the piles for the high viaduct will be 12 feet in diameter, requiring a special oscillator rig for installation of the piles. Larger, deeper piles mean fewer piles are necessary, opening views from the Presidio to the bay.
The new parkway will allow pedestrians and bicyclists to cross over or under Doyle Drive in accordance with the Presidio Trails and Bikeways Master Plan.
The new parkway will have larger 11- and 12-foot lanes to accommodate buses and provide an improved experience for drivers.
Each weekday, nearly 120,000 vehicles travel between Marin and San Francisco over the Golden Gate Bridge along Doyle Drive.
The start of construction of the Presidio Parkway was accelerated by more than a year thanks to the receipt of $50 million in federal stimulus funding.
The new parkway will improve traffic safety by including continuous shoulders for emergency and disabled vehicles.
The first set of tunnels, the Battery Tunnels, will be constructed north of the San Francisco National Cemetery and span 853 feet.
Halleck Street will be closed and temporarily removed during construction. Upon completion of the Main Post Tunnels, Halleck Street will be restored over the top of the new tunnels.
The Main Post Tunnels will be constructed north of the Main Post parade grounds. These will be the longer of the two sets of tunnels, spanning 1,017 feet.
$3.6 million went directly to small and local businesses for the project’s first preconstruction contract (tree removal and native plant and seed collection).
The new parkway will include extended bus bays on both sides of Richardson Avenue.
Seismic safety will be achieved in 2011 when traffic is transferred onto new structures and the temporary bypass adjacent to the existing facility.
A robust Disadvantaged and Small Business Enterprise Participation Program has been established to actively engage businesses throughout San Francisco, the Bay Area, and California to participate in the project.
The northbound and southbound roadways will be separated by a wide, landscaped median improving driver safety and creating a parkway feel.
Both sets of tunnels will be constructed using the cut and cover method by digging into the natural bluffs and covering the tunnels with a green pedestrian corridor.
Including a temporary bypass in the construction phasing reduced the construction duration by nearly two years.

Phases During Construction

This content requires the Adobe Flash Player. Download Free Flash Player Now.

View in Silverlight

View the construction and traffic overview factsheet (2.0 MB).

PHASE I: December 2009 - 2011

Traffic on Doyle Drive, Construction Occurring Adjacent to Existing Roadway

From the start of construction through late 2011, Doyle Drive will continue to operate as it does now, while portions of the new Presidio Parkway are built adjacent to the existing highway structures.

Traffic to and from the Golden Gate Bridge and 19th Ave/Hwy 1 will remain flowing throughout construction. This corridor is a construction zone with continually changing conditions, so delays may occur. However, the connections between 19th Ave and the Golden Gate Bridge will remain open.

During this phase, two Highway 1 ramps will be closed (NB Doyle Drive to SB Park Presidio/Hwy 1 and NB Park Presidio/Hwy 1 to SB Doyle Drive). See details about the ramp closures.

3-Day Weekend Closure of Doyle Drive

In late 2011 there will be a 3-Day Weekend Closure of Doyle Drive to transfer traffic onto a temporary bypass and completed southbound structures.

PHASE II: 2011 - 2013

Traffic Transferred onto a Temporary Bypass

In late 2011, traffic will be shifted onto a bypass next to Doyle Drive with five lanes - wider than those on the existing Doyle Drive - and with opposing traffic flows separated by a median barrier. Although there will be one less lane on the temporary bypass than on the old Doyle Drive, these wider lanes and the median barrier will increase safety and traffic flow. The temporary bypass will accommodate the same capacity as the current Doyle Drive.

3-Day Weekend Closure

In late 2013 there will be a 3-Day Weekend Closure of Doyle Drive to transfer traffic from the temporary bypass onto the final Presidio Parkway.

FINAL ALIGNMENT: 2013

Traffic on the Final Presidio Parkway

In late 2013, major construction will be complete and traffic will be on the final Presidio Parkway. Final project activities after this will include removal of the temporary detour and landscaping.