TR 310 over Otter Creek
GoodLaSalle County, Illinois · E 18th N 1500 · Structure no. 050317700000000
- Built
- 1921
- 104 years old, rebuilt 1980
- Condition
- Good
- inspected June 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 53 ft
- 1 main span
- Daily traffic
- 400
- 2020 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 310 over Otter Creek is a prestressed concrete box beam or girders - multiple carrying TR 310 over Otter Creek in LaSalle County, Illinois. It was built in 1921 and reconstructed in 1980, so it is 104 years old, older 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 400 vehicles a day, roughly 8% of them trucks, projected to reach 404 by 2046. The structure is 53 ft (16.2 m) long and 24 ft wide.
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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR 310 over Otter Creek built?
It was built in 1921, making it 104 years old in 2025. It was reconstructed in 1980.
What condition is TR 310 over Otter 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 June 2024.
How much traffic does TR 310 over Otter Creek carry?
About 400 vehicles per day (2020 count), of which roughly 8% are trucks.
How long is TR 310 over Otter Creek?
The structure is 53 ft (16.2 m) long with a longest span of 52 ft (15.8 m) and a deck 24 ft wide.
Who owns TR 310 over Otter Creek?
It is owned by the Town or Township Highway Agency.