Bridge was constructed and originally owned by the City of St. Louis. In 1989, the City turned the bridge over to TRRA in exchange for the Eads Bridge route, whose tunnels could not accommodate newer and larger trains but was well suited for construction of a new light rail line.
Radio Frequency - 160.500 (AAR Channel 26)
3.3 Q Tower
2.1 North Approach Jct.
4.5 Valley Jct.
3.7 East Approach Jct.
2.1 North Approach Jct.
1.6 South Approach Jct.
1.1 Gratiot Street
0.6 14th Street
--- Union Station
2 tracks, CTC in use.