Cracks Found in Precast Girders Installed for Virginia's Silver Line
An investigation is underway into the cause of longitudinal cracks that have appeared in the precast-concrete girders installed for the aerial guideway of the Silver Line rail project in northern Virginia.
The cracks, some of which are several feet long, were discovered in the top flange of the 96-in.-high, 125- to 150-ft-long girders shortly after they were erected at Dulles International Airport in April by Capital Rail Constructors (CRC), a joint venture of Clark Construction Group LLC and Kiewit Infrastructure South. The JV is constructing the 11.4-mile, $2.778-billion project for the Metropolitan Washington Airports Authority (MWAA).