Inversanda Bridge is a two span concrete deck bridge carrying the B8043 across the River Tarbert at the northern end of the route. The bridge is fairly typical of the pared back concrete structures found elsewhere in the West Highlands, which are believed to largely date from the late 1930s. The central pier stands in the river, with substantial triangular cutwaters to either face, while the abutments are also further protected with short flanking walls on either bank. The deck slab is then surmounted by metal railings acting as parapets, either side of the single track road, complete with grass verges continuing across the bridge. A very similar bridge stands at Glengalmadale to the south.
The current bridge clearly replaces an older structure, about which little is known. However, close examination of the location suggests that the older bridge may have stood immediately downstream of the current span. A field fence, including panels hung across the river, runs a little over a road width from the current road edge, and there is some evidence of a hard surface under the boggy grass of this strip of ground. Furthermore, although distturbed by the flanking walls of the current bridge, and the posts for the fence, there is also a suggestion of the remains of abutments on either river bank. Mapping evidence also suggests that the new bridge was built alongside the old, although none of this is conclusive.
