TR 503 over Otter Creek
GoodLaSalle County, Illinois · N 16th E 2430 · Structure no. 050323200000000
- Built
- 1935
- 90 years old, rebuilt 1986
- Condition
- Good
- inspected June 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 27 ft
- 1 main span
- Daily traffic
- 1,700
- 2020 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 503 over Otter Creek is a prestressed concrete box beam or girders - multiple carrying TR 503 over Otter Creek in LaSalle County, Illinois. It was built in 1935 and reconstructed in 1986, so it is 90 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 1,700 vehicles a day, roughly 1% of them trucks, projected to reach 1,717 by 2046. The structure is 27 ft (8.2 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 | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR 503 over Otter Creek built?
It was built in 1935, making it 90 years old in 2025. It was reconstructed in 1986.
What condition is TR 503 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 503 over Otter Creek carry?
About 1,700 vehicles per day (2020 count), of which roughly 1% are trucks.
How long is TR 503 over Otter Creek?
The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 24 ft wide.
Who owns TR 503 over Otter Creek?
It is owned by the Town or Township Highway Agency.