Central Subway tunnels contract awarded Jun 2011
Paula Wallis, TunnelTalk
Barnard / Impregilo / Healy JV has secured the Central Subway tunnels contract in San Francisco. The San Francisco Municipal Transportation Agency (SFMTA) awarded the $223.6 million contract to the JV on Tuesday, June 28, 2011. The contractor submitted the lowest of six bids earlier this month (Table 1).
"The Central Subway project is vital to connecting our City to our communities like never before," said Mayor Edwin M. Lee. "The project invests in jobs, in people, and in our City with critical infrastructure that will improve transportation for all our residents and families."
SFMTA Board Chairman Tom Nolan said, "The Agency is pleased that the lowest bidder came in under the project engineer's estimates and in these tough economic times we realize that this project will be a shot in the arm to our local economy sparking economic development, job training and growth, and creating thousands of contracting opportunities for local businesses."

Table 1. Bids for the 1.7 mile twin bore tunnels

JV Bid ($ millions)
Barnard/Impregilo/Healy $233,584, 015
Dragados/Flatiron West $234,811,140
Shea/Traylor $257,854,655
Judlau/Shimmick $266,802,330
Obayashi/Kenny $274,556,765
Frontier Kemper/Tutor Perini $296,267,700
Fig 1. Tunnel Alignment

Fig 1. Tunnel Alignment

Notice to proceed is anticipated within three months. The 1.7 mile (2.7km) TBM twin bored tunnels contact is the largest of several for the Third Street light rail extension that will have trains running underground from a station at Fourth and Brannan streets, to North Beach, with stations at Moscone Center, Union Square, and Chinatown (Fig 1). It is estimated that the new subway will serve about 65,000 passengers daily by 2030.
Nathaniel P. Ford, Sr., SFMTA's Executive Director/CEO said the Federal Government, which is being tapped to fund $942 million of the estimated $1.6 billion cost of the project, remains committed. "We are on track to receive the Full Funding Grant Agreement from the FTA by year’s end," said Ford.
The estimated $168 million Union Square Station contract will be advertised later this year, followed by the $87 million Moscone and $141 million Chinatown station contracts.
"This tunneling contract is a major part of opening a dynamic, new era in rapid transit for the people of San Francisco, and especially for those traveling along the congested Stockton corridor," said Ford.
Tight race for Central Subway running tunnels - TunnelTalk, June 2011
Bidding signals start of San Francisco subway - TunnelTalk, June 2011

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