Development, assessment and implementation of a novel FRP composite girder bridge

A lightweight, easily erected, hybrid glass-carbon FRP bridge girder is developed and assessed. A four-point bend test of a 12.45 m-span specimen is performed to assess load-deflection response, flexural strains and girder concrete composite action. Web buckling occurred near peak load, but maximum measured bottom flange tensile strain reached more than 90% of its expected ultimate value. Strength and fatigue resistance of the girder to-deck shear connection is experimentally assessed. Live-load testing of a new, 22.9 m-span bridge using these girders is performed. The test results verify the viability of this FRP girder for short-and medium-span bridges.