Expanding the Caldecott Tunnel, which lies on Highway 24 between Oakland and Orinda, Calif., involves a $420 million fourth bore project to alleviate traffic congestion. In charge of excavation from the west end of the fourth bore is FoxFire Constructors of San Clemente, Calif.
Built in 1901, the Willis Avenue Bridge over the Harlem River carries more than 70,000 vehicles a day. Age, weather and heavy use of this swing bridge led the New