TR-178 over Big Muddy River
FairJefferson County, Illinois · 2 MI W Mt Vernon · Structure no. 041364100000000
- Built
- 1985
- 40 years old
- Condition
- Fair
- inspected January 2024
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 92 ft
- 3 main spans
- Daily traffic
- 75
- 2021 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR-178 over Big Muddy River is a prestressed concrete box beam or girders - multiple carrying TR-178 over Big Muddy River in Jefferson County, Illinois. It was built in 1985, so it is 40 years old, younger 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 75 vehicles a day, roughly 15% of them trucks, projected to reach 76 by 2046. The structure is 92 ft (28 m) long and 24 ft wide. If it were closed, the detour would be 5 mi (8 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 | 7 Good | Some minor problems. |
| 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 TR-178 over Big Muddy River built?
It was built in 1985, making it 40 years old in 2025.
What condition is TR-178 over Big Muddy 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 January 2024.
How much traffic does TR-178 over Big Muddy River carry?
About 75 vehicles per day (2021 count), of which roughly 15% are trucks.
How long is TR-178 over Big Muddy River?
The structure is 92 ft (28 m) long with a longest span of 39 ft (11.9 m) and a deck 24 ft wide.
Who owns TR-178 over Big Muddy River?
It is owned by the Town or Township Highway Agency.