TR 178 over Langan CR
GoodIroquois County, Illinois · 3.32 MI S CO Line · Structure no. 038363900000000
- Built
- 1972
- 53 years old
- Condition
- Good
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 159 ft
- 3 main spans
- Daily traffic
- 100
- 2022 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 178 over Langan CR is a steel continuous stringer/multi-beam or girder carrying TR 178 over Langan CR in Iroquois County, Illinois. It was built in 1972, so it is 53 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 100 vehicles a day, roughly 43% of them trucks, projected to reach 253 by 2046. The structure is 159 ft (48.5 m) long and 26 ft wide. If it were closed, the detour would be 1.9 mi (3 km).
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 | 8 Very Good | No problems noted. |
| 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 Langan CR built?
It was built in 1972, making it 53 years old in 2025.
What condition is TR 178 over Langan CR 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 September 2023.
How much traffic does TR 178 over Langan CR carry?
About 100 vehicles per day (2022 count), of which roughly 43% are trucks.
How long is TR 178 over Langan CR?
The structure is 159 ft (48.5 m) long with a longest span of 56 ft (17.1 m) and a deck 26 ft wide.
Who owns TR 178 over Langan CR?
It is owned by the Town or Township Highway Agency.