TR 315 over Briar Creek
GoodWilliamson County, Illinois · 5M SE Crab Orchard · Structure no. 100314800000000
- Built
- 1991
- 34 years old
- Condition
- Good
- inspected January 2023
- Type
- Box Beam or Girders - Multiple
- Prestressed Concrete
- Length
- 41 ft
- 1 main span
- Daily traffic
- 150
- 2021 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR 315 over Briar Creek is a prestressed concrete box beam or girders - multiple carrying TR 315 over Briar Creek in Williamson County, Illinois. It was built in 1991, so it is 34 years old, younger 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 150 vehicles a day, roughly 29% of them trucks, projected to reach 152 by 2046. The structure is 41 ft (12.6 m) long and 24 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 | 8 Very Good | No problems noted. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR 315 over Briar Creek built?
It was built in 1991, making it 34 years old in 2025.
What condition is TR 315 over Briar Creek 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 2023.
How much traffic does TR 315 over Briar Creek carry?
About 150 vehicles per day (2021 count), of which roughly 29% are trucks.
How long is TR 315 over Briar Creek?
The structure is 41 ft (12.6 m) long with a longest span of 39 ft (11.9 m) and a deck 24 ft wide.
Who owns TR 315 over Briar Creek?
It is owned by the Town or Township Highway Agency.