An analysis of the 2013 National Bridge Inventory database released this month by the US Department of Transportation (USDOT) shows cars, trucks and school buses cross Illinois's 2,275 structurally compromised bridges 13,000,000 times every day. The ARTBA analysis of the bridge data supplied by the states to the USDOT found: Illinois ranks ninth nationally in its number of structurally deficient bridges, and 28th in the percentage of its bridges that are classified as structurally deficient, at nine per cen
