This award-winning $58 million, 4650 ft (1417 m) long structure is the first major all-precast, prestressed concrete segmental cable-stayed bridge built in the northeast United States. Situated on the new state relief route (SR-1) near St. Georges, Delaware, the bridge will be a big step forward in alleviating traffic congestion on this important transportation corridor. This article will concentrate on the 1650 ft (503 m) cable-stayed portion of the the project which has a main span of 750 ft (229 m). A major feature of the design is the use of precast delta frames, trapezoidal box girder segments, box pier segments and piles - all precast components were barged 180 miles (290 km) to the bridge site. The innovative design features and new construction techniques contributed to making this bridge into a very efficient and economical structure. The author presents the conceptual design and structural design features of the bridge while discussing the production, transportation, and erection aspects of the precast concrete segments.
