the route over St. Paul's Avenue and a CSAO line. The St. Paul's Viaduct was built in 1928 and determined structurally deficient. The $271.9-million (equivalent to $ in ) replacement was completed in September 2011. In addition to replacing the St. Paul's Avenue viaduct, the approaches to US 1/9 Truck between Route 7 and the Tonnele Circle were improved. Studies are being conducted to make the intersection with Route 440 a multilevel traffic circle and to make the northern and southern (Route 440) approaches into a multiuse urban boulevard that includes grade separations and additional medians. The studies are in anticipation of a general increase of activity in Port of New York and New Jersey, as well as new development on Jersey City's West Side and Hackensack RiverWalk. Major intersections See also Notes References External links Route 1&9T St. Paul's Viaduct Replacement 01/9 Truck (Jersey City, New Jersey) 01/9 Truck (Jersey City) Limited-access roads in New Jersey U.S. Route 001 9 Truck Truck (Jersey City, New Jersey) Truck (Jersey City, New Jersey) Roads in Essex County, New Jersey Roads in Hudson County, New Jersey Transportation in Newark, New Jersey Transportation in Jersey City, New Jersey