The Milbridge bridge is a stress-laminated deck post-tensioned with Glass-Fiber-Reinforced-Polymer (GFRP) tendons. It is the first stress-laminated bridge in the world constructed using GFRP tendons. GFRP tendons reduce prestress losses and eliminate the need to retension the bridge in service. A field-monitoring program demonstrated the advantage of GFRP tendons over steel threadbars in maintaining prestress levels. A report is available from AEWC.

Specifications

• Year Constructed: 1996
• Length: 16 ft.
• Width: 24 ft.
• Design Live Load: HS25
• Wood Species: Eastern Hemlock
• FRP Tensile Strength: 26,000 lb/tendon
• FRP Tensile Modulus: 6,000,000 psi
• FRP Material Suppliers: South Dakota School of Mines, University of Maine

Sponsored by: Town of Milbridge, University of Maine