Ill 100 over Walnut Creek
GoodScott County, Illinois · 1.5MI N JCTIL100&106 · Structure no. 086003900000000
- Built
- 1984
- 41 years old
- Condition
- Good
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 236 ft
- 3 main spans
- Daily traffic
- 1,000
- 2021 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 100 over Walnut Creek is a steel continuous stringer/multi-beam or girder carrying Ill 100 over Walnut Creek in Scott County, Illinois. It was built in 1984, so it is 41 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 1,000 vehicles a day, roughly 30% of them trucks, projected to reach 1,010 by 2046. The structure is 236 ft (71.9 m) long and 35 ft wide. If it were closed, the detour would be 11.8 mi (19 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Ill 100 over Walnut Creek built?
It was built in 1984, making it 41 years old in 2025.
What condition is Ill 100 over Walnut Creek 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 2024.
How much traffic does Ill 100 over Walnut Creek carry?
About 1,000 vehicles per day (2021 count), of which roughly 30% are trucks.
How long is Ill 100 over Walnut Creek?
The structure is 236 ft (71.9 m) long with a longest span of 90 ft (27.5 m) and a deck 35 ft wide.
Who owns Ill 100 over Walnut Creek?
It is owned by the State Highway Agency.