This project funds the remainder of construction costs to replace two bridges on the Rock Island (RI) Line in the Auburn Gresham neighborhood of Chicago. The Vincennes Bridge on the RI Main Line is a concrete structure built in 1916 at milepost 9.75. The Morgan Bridge on the RI Beverly Branch is a timber structure at milepost 10.15 and was erected in 1973 by the now-defunct Rock Island Railroad with the intention of being a temporary solution. Both bridges are named after the Chicago street over which they cross, carry two main line tracks, and will be replaced with resilient concrete bridges.