Lord Delaware Bridge
Project Details
Location
Route 33 over the Mattaponi River
West Point, Virginia
Owner
Virginia Department of Transportation (VDOT)
Engineer
VDOT District Engineers with Consulting Design Firms
Precast Manufacturers
Bayshore Concrete Products
Standard Concrete Products
Lightweight Aggregate Supplier
Stalite Lightweight Aggregate
Description
The Lord Delaware Bridge carries Route 33 over the Mattaponi River near West Point, Virginia, replacing older, obsolete structures with a modern long-span solution.
The 3,545-foot bridge incorporates 2,195 feet of lightweight high performance concrete (LWHPC) beams and deck. Prestressed concrete bulb-tee girders were cast using 8,000 psi structural lightweight concrete produced with Stalite Lightweight Aggregate, reducing dead load while maintaining high strength and durability.
The structure consists of three river-spanning units, including 145-foot spans and twin units with spans of 200, 240, 240, and 200 feet. The 70′-4″ wide deck was cast-in-place using 5,000 psi lightweight concrete specified at 110 pcf density.
This project demonstrates the efficiency and structural advantages of high-strength lightweight concrete in major bridge applications.
