All 10 bridges have a sufficiency rating lower than 80, according to FDOT data. The bridges on Immokalee Road have annual average daily traffic, or AADT, between 3,200 and 4,635 vehicles, and the ones on Oil Well Road have an AADT of not more than 450 vehicles each, according to FDOT data. The bridge on Countyline Road has an AADT of 110 vehicles. The new wider, sturdier bridges on Immokalee Road are designed to include wildlife shelves below them "to allow animals to get across the road safely," Messam wrote. Each new bridge will have one 12-foot travel lanes in each direction and 8-foot shoulders, Messam wrote.