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
Decks
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.
