TICD Phase 1 Construction - Yerba Buena Island Impacts


Image of map of current road closures and detour roads on Yerba Buena Island

As of August 2018, Treasure Island Community Development has closed Yerba Buena Island's Macalla Road for 18-24 months for road widening and re-construction.  Forest Road Detour road now carries motorists from the Bay Bridge Westbound off-ramp to Hillcrest Road.  From Hillcrest Road, motorists continue along Treasure Island Road to reach Treasure Island. 

View information about development-construction traffic circulation changes in effect on Treasure Island

YBI Streets and Traffic Circulation Impacts:

  • Forest Road Detour road carries two-way traffic between Northgate Road and Hillcrest Road providing access to/from the new Westbound On/Off Ramps and United States Coast Guard.
  • Macalla Road is closed to all vehicle, pedestrian and cyclist traffic between Northgate Road and Treasure Island Road.
  • From Treasure Island, motorists wishing to reach the new Westbound On-Ramp east of the Bay Bridge tunnel, or other destinations on YBI, will need to take this Forest Road Detour road over the top of YBI to Northgate Road.
  • No regular impact to the Bay Bridge YBI on-ramps and off-ramps.
  • All other currently open YBI streets will remain open.
  • Quarters 10 Park and Clipper Cove Beach remain open to the public during daylight hours.  There is no on-site parking on YBI at Q-10 Park/Clipper Cove Beach, please use the public parking at the Administration Building on Treasure Island.

For Ongoing Motorist and Cyclist Awareness:

  • Motorists and cyclists should expect increase in two-way traffic and heavy equipment construction traffic along Treasure Island Road and along Hillcrest Road.
  • Motorists should expect construction vehicles entering and exiting the roadway along Forest Road Detour road. 
  • There are no bicycles or pedestrians allowed on the new Forest Road Detour road.
  • Cyclists and vehicles will share the road through the impacted areas along Hillcrest Road and Treasure Island Road.
  • No impact to the Treasure Island Road/Hillcrest Road connection between Treasure Island and the Bay Bridge pedestrian/bicycle path trailhead and YBI Vista Point.
  • No regular impact to the MUNI-25 Treasure Island bus route.
  • Yerba Buena Island Bay Bridge Eastbound Off-Ramp remains open.
  • Yerba Buena Island Bay Bridge Westbound On-Ramp located west of the Bay Bridge tunnel remains open.

Please drive safely on-Island at all times.  Motorists and cyclists are reminded to Share the Road in the impacted areas!