River Road Dual Bridge Design

The relocation of River Road in Wilmington, North Carolina takes the road over a man-made lake and greenway in the River Lights Community. WEI designed and performed construction inspection services on dual one span box beam bridges 92’-6” in length. The left lane bridge is 33 feet wide and carries 2 travel lanes. The right lane bridge is 45 feet wide and carries 2 travel lanes and a 10-foot pedestrian walkway.

Both bridges have a minimum 4 ¼” concrete wearing surface and the pedestrian walkway consists of a 4” concrete overlay on top of the box beams. The substructure for the bridges consists of approximately 12-foot-high concrete abutments with turned back wings. The vertical load of the abutments is supported by steel piles while a small footing at the base of the abutments was used to counteract overturning.

In addition to the pedestrian walkways on the bridge, there is also a pedestrian path beneath the bridge to provide greenway access. The bridges were designed and constructed for a private developer, but were turned over to be maintained by the City.


Private Developer


Wilmington, NC


River Road Dual Bridge DesignRiver Road Dual Bridge DesignRiver Road Dual Bridge DesignRiver Road Dual Bridge Design