In this project externally bonded fiber reinforced polymers (FRP) laminates and Near Surface Mounted FRP bars were installed for the flexural strengthening of a concrete bridge. The bridge is a three-span simply supported reinforced concrete slab with no transverse steel reinforcement, load posted and located on Martin Spring Outer Road in Phelps County, MO. The original construction combined with the presence of very rigid parapets caused the formation of a wide longitudinal crack which resulted in the slab to behave as two separate elements. The FRP strengthening was designed to avoid further cracking and such that the transverse flexural capacity be higher than the cracking moment. Both FRP techniques were easily implemented and showed satisfactory performance.

Crack Injection	Surface Prep
NSM FRP Bar Installation	NSM Bar Close-up

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