The original Mungindi Bridge was a Dare type truss road bridge, designed by Harvey Dare. It was one of 40 Dare truss bridges built in NSW. The bridge was built by Lawson & Wladro in 1914. It was a single timber truss span of 27.7 m (91 ft), with 2 timber approach spans at each end giving the bridge an overall length of 61.6 m (202 ft).
The new Mungindi Bridge is a two-lane concrete bridge with a pedestrian footpath on one side. The bridge is higher to improve flood immunity of this important rural highway. Construction of the new bridge and road approaches was jointly funded by New South Wales and Queensland state governments under the Southern Queensland Accelerated Road Rehabilitation Project.