All Projects - Accelerating Technology

Prefabricated Bridge Elements and Systems

Route 7 over Route 50
Location	Fairfax County
State	VA
Completion Date	1999
Contact Person	Nicholas J. Roper P.E. Virginia Department of Transportation Phone: (703) 383-2117 Email: Nicholas.Roper@VirginiaDOT.org
Description	Replacement of the Route 7 over Route 50 bridges in Fairfax County required VirginiaDOT to replace approximately 14,000 square feet of deteriorating bridge deck. VirginiaDOT opted to use precast deck panels to satisfy community concerns about reductions in the level of service. Operating only at night, crews saw cut sections of the existing deck, lifted and removed them by crane, and immediately installed new deck panels that matched the deck cavity. They then placed a rapid-setting concrete overlay that supported full traffic after only three hours of curing. The bridge was completely open to traffic during the day.
Photo
Prefabricated Elements	full
Other Keywords	Precast deck panels (lightweight)
Advantages	Minimized traffic disruption by reducing construction time and minimized equipment needed and dead load on the existing structure.
Photo Credits	Virginia Department of Transportation