US ROUTE 29 GAINESVILLE, VA INTERCHANGE

摘要

Numerous train crossings of the at grade intersection with US 29 result in traffic congestion forthe 54,000 daily vehicles on this urban highway. A 77 degree skew, expensive right‐of‐way and constrainedvertical profile present additional challenges. The new bridge requires 11 lanes of traffic to span over four raillines with provisions for collision protection of the abutments. A structure with prestressed concrete beamsoriented perpendicular to traffic was chosen as the solution.