Chain of Rocks Bridge

The words

Park Service: Illinois: Chain of Rocks Bridge (opens a new tab)

1. Barges

   Cargo vessels navigating among the piers and towers.

2. Bedrock

   Foundation rock that affected the bridge alignment.

3. Chain of Rocks

   River formation that gave the bridge its name.

4. Elm Trees

   Trees planted along the Illinois approach.

5. Floods

   High water that delayed bridge construction.

6. Green Paint

   Wartime coating intended to reduce aerial visibility.

7. Piers

   Structural supports in the river.

8. Restoration

   Preservation work undertaken on the disused bridge.

9. Riverboats

   Vessels whose navigation affected the bridge plan.

10. Rock Ledges

    Submerged formations complicating river navigation.

11. Shoal

    Shallow river area associated with the crossing.

12. St Louis

    Missouri city near the river crossing.

13. Toll Booth

    Structure used to collect payment at the Missouri end.

14. Trailnet

    Organization involved in cleaning and restoring the bridge.

15. Water Intakes

    Waterworks structures near the bridge.