Dec 13 2010
Tutor Perini Corporation (NYSE: TPC), a leading civil and building construction company, today announced that it has been named by the Washington Department of Transportation (“WDOT”) as part of the winning team for the SR99 Bored Tunnel Project. The new tunnel is to be constructed by Seattle Tunnel Partners, a joint venture of Dragados USA and TPC.
The team was selected on the basis of price and the team’s schedule, design and other factors. Although the Dragados-TPC team had a slightly higher price than their competitor, Seattle Tunnel Partners was selected based on overall price, technical approach and best apparent value. The initial contract value is expected to be $1,089,700,002. TPC’s share of the joint venture is 45%.
The project, also known as the “Alaskan Way Viaduct Replacement Project”, will involve the construction of approximately 12,500 lf of new roadway, of which 9,273 lf will be constructed using an earth pressure balance tunnel boring machine. At the time of construction, this will be the largest tunnel boring machine construction in the world.
The approach roadways at the North End (800’) and the South End (2,400’) will be constructed using cut and cover excavation and concrete placement methods. When constructed, the tunnel will allow two lanes of traffic in each direction in a stacked configuration with the North bound lanes on the top and the South bound lanes on the bottom. The stacked configuration will then gradually diverge and rise back to existing ground traffic configurations through the North and South approach roadways.
The contract award and initial notice to proceed are scheduled for January 4, 2011 and will allow preliminary investigations and scheduling in support of the ongoing environmental impact statement review and decision. The second notice to proceed for construction is expected to be issued in August 2011. Final completion and traffic through the tunnel is scheduled for December, 2015.
Source: http://www.perini.com