Case Studies

North Bank Pedestrian Bridge – Boston, MA

| By jroberts | In Case Studies |

 

 

 

 

 

 

 

 

 

 

 

Project Overview:

FRP Deck Manufacturer: Composites Advantage

Engineer of Record: Ammann & Whitney

Contractor: Barletta Heavy Division

Owner: Massachusetts DOT

 

Project Description:

This FRP pedestrian bridge connects two parks along the north bank of the Charles river in Boston, MA. The deck size measures 690 by 12 feet, and each deck panel measures 10.3 feet by 12 feet. The deck is 5 inches deep, and the total area of the deck surface is 8,280 square feet, weighing 11 pounds per square foot.

The products used in this installation were prefabricated FRP bridge deck panels, attached to a steel chord superstructure using mechanical fasteners attaching to floor beams. The surface of the bridge deck was coated with an epoxy aggregate non-slip coating.

FRP was used in this project because the bridge must be able to withstand loads of 100 pounds per square foot, with L/500 deflection, and must be able to support the weight of a 6,400 pound maintenance vehicle.

Using FRP allowed curbs and expansion joints to be pre-installed on the deck panels, reducing installation time and costs. Curved prefabricated panels allowed the bridge to achieve the necessary “S” shape.