In reinforced concrete design, strut-and-tie methods are often used to create safe and efficient designs for disturbed regions such as deep beams. While strut-and-tie methods more accurately capture the flow of stresses through disturbed regions compared to sectional methods, the code provisions that govern how these members are designed have been developed for structural members reinforced with conventional steel reinforcement. To assess if similar provisions can be used for concrete structures reinforced with fiber-reinforced polymer (FRP) reinforcing bars, a series of large-scale deep beams reinforced with glass FRP bars were designed, constructed, and tested. The experimental program investigated the impact of longitudinal reinforcement ratio and axial stiffness, and because FRP bars differ in surface preparation among manufacturers, two bar types were tested to cover the range of anticipated bond conditions. Beams were tested without stirrups to isolate the effect of longitudinal reinforcement. Full field of view digital image correlation (DIC) was used to gather displacement field data throughout loading and these results will be compared to the behavior assumed with strut-and-tie methods. This research explores the significant changes in the performance and behavior of these members, and will ultimately influence future code provisions on how to safely and efficiently design FRP reinforced disturbed regions.