Ill 3 NB over Cahokia Diversion
GoodMadison County, Illinois · 2.5 MI N FAI 270 · Structure no. 060031500000000
- Built
- 2000
- 25 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 337 ft
- 3 main spans
- Daily traffic
- 13,800
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 3 NB over Cahokia Diversion is a steel continuous stringer/multi-beam or girder carrying Ill 3 NB over Cahokia Diversion in Madison County, Illinois. It was built in 2000, so it is 25 years old, younger than the Illinois average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
It carries about 13,800 vehicles a day, roughly 11% of them trucks, projected to reach 7,597 by 2046. The structure is 337 ft (102.8 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).
Location
Open in Google MapsCondition and inspection
All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ill 3 NB over Cahokia Diversion built?
It was built in 2000, making it 25 years old in 2025.
What condition is Ill 3 NB over Cahokia Diversion in?
The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in September 2023.
How much traffic does Ill 3 NB over Cahokia Diversion carry?
About 13,800 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is Ill 3 NB over Cahokia Diversion?
The structure is 337 ft (102.8 m) long with a longest span of 112 ft (34.1 m) and a deck 43 ft wide.
Who owns Ill 3 NB over Cahokia Diversion?
It is owned by the State Highway Agency.