OWNER: San Francisco Municipal Transportation (SFMTA)
PRIME CONTRACTOR: Tutor Perini Corporation
FKCI ROLE: Subcontractor
START DATE: April 2015
COMPLETED: May 2017
Chinatown Station is one of three underground stations constructed as part of the Central Subway Project in downtown San Francisco. Under subcontract to Tutor Perini, Frontier-Kemper was responsible for the excavation and initial support of the Underground Station Cavern. The work included approx. 45,000 bcy of excavation and about 27,000 cy of shotcrete placement. The NATM/Sequential Excavation Method (SEM) was utilized for the excavation of the station. Our scope of work included:
Cross-Cut Cavern
roughly 58-ft. tall; 48-ft. wide
70 LF
excavated c/s area of approx. 2,255 ft²
North Platform Cavern
roughly 47-ft. tall; 60-ft. wide
116 LF
excavated c/s area of approx. 2,228 ft²
South Platform Cavern
roughly 47-ft. tall; 60-ft. wide
176 LF
excavated c/s area of approx. 2,228 ft²
Crossover Cavern
roughly 41-ft. tall; 60-ft. wide
268 LF
excavated c/s area of approx. 1,942 ft²
Emergency Egress Shaft
(2) Emergency Egress Tunnels
Click here to learn more about SFMTA's Central Subway Project.
SERVICES PERFORMED:
AWARDS:
2023 Project of the Year Best Airport/Transit
2023 Northern California Best Projects Competition
Engineering News Record
2020 Project of the Year
€50M–€500M
ITA–International Tunnelling and Underground Space Association