TR 311 over Trib to Marys River
GoodRandolph County, Illinois · 1 MI E of Chester · Structure no. 079421400000000
- Built
- 1976
- 49 years old
- Condition
- Good
- inspected January 2025
- Type
- Channel Beam
- Concrete
- Length
- 36 ft
- 1 main span
- Daily traffic
- 450
- 2024 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 311 over Trib to Marys River is a concrete channel beam carrying TR 311 over Trib to Marys River in Randolph County, Illinois. It was built in 1976, so it is 49 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 450 vehicles a day, roughly 6% of them trucks, projected to reach 556 by 2046. The structure is 36 ft (11 m) long and 26 ft wide. If it were closed, the detour would be 5 mi (8 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 | 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 311 over Trib to Marys River built?
It was built in 1976, making it 49 years old in 2025.
What condition is TR 311 over Trib to Marys River 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 January 2025.
How much traffic does TR 311 over Trib to Marys River carry?
About 450 vehicles per day (2024 count), of which roughly 6% are trucks.
How long is TR 311 over Trib to Marys River?
The structure is 36 ft (11 m) long with a longest span of 34 ft (10.4 m) and a deck 26 ft wide.
Who owns TR 311 over Trib to Marys River?
It is owned by the Town or Township Highway Agency.