Paul Kivisto P.E. Minnesota Department of Transportation Phone: (651) 747-2130 Email: paul.kivisto@dot.state.mn.us
Description
This bridge replacement project required a shallow structure that was durable, economical, and quick to construct because no detour route was available. The Minnesota Department of Transportation opted for a low depth, rectangular precast beam system because the cast-in-place deck option would have required falsework below the structure that would have been susceptible to flood waters. The bridge has a 51-foot beam span, and the nine-inch deck is supported by the solid rectangular prestressed beams. Because the beams were shallow rather than the deeper I-shaped sections, they also eliminated the need to raise the existing profile grade and satisfied hydraulic and right-of-way constraints for the project.
Photo
Other Keywords
Precast solid rectangular prestressed beams
Advantages
Minimized traffic disruption by reducing the time needed to construct falsework for the cast-in-place deck.
