Lake Shore Drive, a part of U.S. Highway 41 that runs parallel with and along the shoreline of Lake Michigan in Chicago, was closed to northbound traffic from the morning of February 11 to the afternoon of February 12 due to cracks in structural steel support girders on the elevated roadway that leads to the Outer Drive Bridge which crosses the Chicago River at the mouth of Lake Michigan.

On the first major construction job in decades along a busy stretch of Interstate 70, the project team expanded two highway tunnels, added an eastbound freeway lane and provided for future westbound capacity.

A horizontally curved, precast- concrete, trapezoidal type of box-girder design that shaved some $9 million off an interchange project in Orlando, Fla., is attracting growing interest from the bridge engineering industry.