Charles Emerson Bridge. Newark, DE.
Under the Delaware Department of Transportation’s Transportation Alternatives Program, WRA developed a conceptual design – and is currently preparing construction documents – for a new bicycle and pedestrian bridge over White Clay Creek. The site has a number of constraints including wetlands, floodplain, an adjacent road bridge that is eligible for the National Register of Historic Places, and the creek’s designation as a National Wild and Scenic River. Constructability will also be a challenge, as the site is crisscrossed by overhead electric lines. To address these constraints, WRA developed a conceptual design for a 230-foot single-span prefabricated truss to eliminate the need for a permanent pier in the creek. Because the electric lines will likely preclude conventional installation using cranes, it is anticipated that the bridge will be “launched” from one bank using a temporary pier on a rock outcropping in the creek, with the pier location to be restored after construction.