Tunneling Projects

7,000 feet of twin tube tunnel and a station from Times Square to the Hudson Yards to extend the No. 7 subway through Manhattan. A joint venture between J.F. Shea, Skanska USA Civil, and Schiavone. The project opened to the public in September of 2015.

A joint venture between J.F. Shea and Kiewit, this 8-mile, 20.2 - foot diameter tube will help the growing city control waste water and sewage overflow.

Two, 19-foot diameter tunnels connecting the Devil’s Canyon water plant facility to the Diamond Valley Lake and providing a ready water storage source within the Los Angeles Basin.

This 37,400-foot long, 20-foot in diameter tunnel controls sewer overflows into the several local rivers flowing out into Lake Michigan, the fresh water source for many regional cities.

This 6-mile, 27-foot diameter tunnel through hard rock provides long-term sewer conveyance while eliminating two major pumping stations and 87,000 linear feet of aging sewer line.