Chinatown Station

SFMTA Central Subway Project–T Third Line Light Rail Extension
PROJECT DETAILS:
LOCATION: San Francisco, CA

MARKET: Transportation

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 being constructed as part of the Central Subway Project in downtown San Francisco. Under subcontract to Tutor Perini, Frontier-Kemper is responsible for the excavation and initial support of the Underground Station Cavern. The work includes approx. 45,000 bcy of excavation and about 27,000 cy of shotcrete placement. The NATM/Sequential Excavation Method (SEM) will be 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:
SEM NATM tunnel contractor
shotcrete application
underground engineering and shop services
AWARDS:
2020 Project of the Year
€50M–€500M
ITA–International Tunnelling and Underground Space Association
Frontier-Kemper Constructors, Inc.
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