The first bridge over the Sanitary and Ship Canal at 9th Street (IL 7) in Lockport was an iron swing bridge. It was located in an area between the sites of the East Romeo Road and the Division Street Bridges. It was a lost through Pratt truss type. It had 12 sections with the pivot at section 5. It was removed in 1971.
Its replacement was located at mile marker 292.7. It was a fixed cement girder bridge. It crosses both the Sanitary and Ship Canal and the DesPlaines River. Its horizontal clearance was 225 feet. Its vertical clearance was 48.2 feet. There are two lanes in both directions.