Constructed between 1938 and 1939 by British engineers, the barrage was designed primarily to safeguard Jhang and its surrounding areas from seasonal flooding, which had historically posed significant risks to lives and livelihoods.

The architectural design of Trimmu Barrage integrates an arched grid-iron bridge supported by a network of protective bands, showcasing engineering techniques of the early 20th century.

During a major rehabilitation phase concluding on June 30, 2020, temporary traffic restrictions were implemented to ensure safety and facilitate uninterrupted construction activities.

The restored and modernized Trimmu Barrage now stands as a critical infrastructure asset, combining enhanced flood management capabilities with improved connectivity across the Chenab River.

Its role extends beyond flood control, contributing significantly to regional irrigation systems and supporting local economies dependent on agriculture and trade.