Photo taken by Kim Harvey in April 2009
This bridge was for a Trolley line. The Alton area was served by the “Alton, Granite & St. Louis” Traction, an electric line. The trolley line came from Alton and headed east, paralleling what is now the South side of Broadway. At that bridge the rail line turned south and crossed the CCC RR and the Chicago & Alton RR. Some distance later the line turned east to Wood River and Hartford and further points South. I have a map that shows the rail line as early as 1906.