TR-1A over Trib Harper Creek
GoodJefferson County, Illinois · 2 MI N Mt Vernon · Structure no. 041506100000000
- Built
- 1998
- 27 years old
- Condition
- Good
- inspected January 2024
- Type
- Culvert
- Concrete
- Length
- 24 ft
- 2 main spans
- Daily traffic
- 450
- 2021 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR-1A over Trib Harper Creek is a concrete culvert carrying TR-1A over Trib Harper Creek in Jefferson County, Illinois. It was built in 1998, so it is 27 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 450 vehicles a day, roughly 16% of them trucks, projected to reach 455 by 2046. The structure is 24 ft (7.2 m) long.
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 |
|---|---|---|
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was TR-1A over Trib Harper Creek built?
It was built in 1998, making it 27 years old in 2025.
What condition is TR-1A over Trib Harper 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 2024.
How much traffic does TR-1A over Trib Harper Creek carry?
About 450 vehicles per day (2021 count), of which roughly 16% are trucks.
How long is TR-1A over Trib Harper Creek?
The structure is 24 ft (7.2 m) long with a longest span of 11 ft (3.5 m).
Who owns TR-1A over Trib Harper Creek?
It is owned by the Town or Township Highway Agency.