• South St. Mary's Street Underpasses - San Antonio TX
    In 1937, the Texas Highway Department and the United States Bureau of Public Roads built two underpasses on South St. Mary's Street in San Antonio, Texas to separate the grade of South St. Mary's Street from the railway lines of the Missouri-Kansas-Texas Railroad and the Texas and New Orleans Railroad. The Texas and New Orleans Railroad merged with Southern Pacific Railroad which was taken over by Union Pacific Railroad, which still uses the bridge. The Missouri-Kansas-Texas Railroad bridge is no longer in use and the railroad tracks have been removed.