Sand Prairie Road over Cahokia Canal
FairMadison County, Illinois · 1.25 M S Ill 111 · Structure no. 060014400000000
- Built
- 1955
- 70 years old, rebuilt 1995
- Condition
- Fair
- inspected August 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 148 ft
- 3 main spans
- Daily traffic
- 1,700
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
Sand Prairie Road over Cahokia Canal is a steel continuous stringer/multi-beam or girder carrying Sand Prairie Road over Cahokia Canal in Madison County, Illinois. It was built in 1955 and reconstructed in 1995, so it is 70 years old, older than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
It carries about 1,700 vehicles a day, roughly 6% of them trucks, projected to reach 1,819 by 2046. The structure is 148 ft (45 m) long and 41 ft wide. If it were closed, the detour would be 5 mi (8 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 8 Very Good | No problems noted. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sand Prairie Road over Cahokia Canal built?
It was built in 1955, making it 70 years old in 2025. It was reconstructed in 1995.
What condition is Sand Prairie Road over Cahokia Canal in?
The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in August 2024.
How much traffic does Sand Prairie Road over Cahokia Canal carry?
About 1,700 vehicles per day (2024 count), of which roughly 6% are trucks.
How long is Sand Prairie Road over Cahokia Canal?
The structure is 148 ft (45 m) long with a longest span of 52 ft (16 m) and a deck 41 ft wide.
Who owns Sand Prairie Road over Cahokia Canal?
It is owned by the State Highway Agency.