Ill 177 over Plum Creek
FairWashington County, Illinois · 1 MI W of I-64 · Structure no. 095001600000000
- Built
- 1936
- 89 years old, rebuilt 1981
- Condition
- Fair
- inspected July 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 117 ft
- 3 main spans
- Daily traffic
- 3,150
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
Ill 177 over Plum Creek is a prestressed concrete box beam or girders - multiple carrying Ill 177 over Plum Creek in Washington County, Illinois. It was built in 1936 and reconstructed in 1981, so it is 89 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 3,150 vehicles a day, roughly 11% of them trucks, projected to reach 4,719 by 2046. The structure is 117 ft (35.7 m) long and 37 ft wide. If it were closed, the detour would be 29.8 mi (48 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 Ill 177 over Plum Creek built?
It was built in 1936, making it 89 years old in 2025. It was reconstructed in 1981.
What condition is Ill 177 over Plum Creek 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 July 2024.
How much traffic does Ill 177 over Plum Creek carry?
About 3,150 vehicles per day (2023 count), of which roughly 11% are trucks.
How long is Ill 177 over Plum Creek?
The structure is 117 ft (35.7 m) long with a longest span of 39 ft (11.9 m) and a deck 37 ft wide.
Who owns Ill 177 over Plum Creek?
It is owned by the State Highway Agency.