Old US 51(UNMARKED over Cache River
FairPulaski County, Illinois · Ullin · Structure no. 077001600000000
- Built
- 1920
- 105 years old, rebuilt 2011
- Condition
- Fair
- inspected September 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 123 ft
- 2 main spans
- Daily traffic
- 1,900
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Old US 51(UNMARKED over Cache River is a prestressed concrete box beam or girders - multiple carrying Old US 51(UNMARKED over Cache River in Pulaski County, Illinois. It was built in 1920 and reconstructed in 2011, so it is 105 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 1,900 vehicles a day, roughly 13% of them trucks, projected to reach 1,717 by 2046. The structure is 123 ft (37.5 m) long and 32 ft wide. If it were closed, the detour would be 6.2 mi (10 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Old US 51(UNMARKED over Cache River built?
It was built in 1920, making it 105 years old in 2025. It was reconstructed in 2011.
What condition is Old US 51(UNMARKED over Cache River 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 September 2023.
How much traffic does Old US 51(UNMARKED over Cache River carry?
About 1,900 vehicles per day (2023 count), of which roughly 13% are trucks.
How long is Old US 51(UNMARKED over Cache River?
The structure is 123 ft (37.5 m) long with a longest span of 61 ft (18.7 m) and a deck 32 ft wide.
Who owns Old US 51(UNMARKED over Cache River?
It is owned by the State Highway Agency.