The Minnesota Department of Transportation sought to improve the anti-icing system on the Interstate 35W bridge over the Mississippi River in Minneapolis.  NAC served as the prime contractor self-performing the mechanical repairs to the bridge and electrical modifications to the leak detection system. The anti-icing system includes sprayers, PVC piping that carries anti-icing chemicals, a containment system, and collection tanks. Crews replaced the existing anti-leak containment system with a more reliable and efficient configuration. The … [Read more...]