TR129 over Donohue Run
FairMercer County, Illinois · CTR-3-T14NR2W · Structure no. 066307300000000
- Built
- 1974
- 51 years old
- Condition
- Fair
- inspected September 2024
- Type
- Tee Beam
- Concrete
- Length
- 98 ft
- 3 main spans
- Daily traffic
- 100
- 2024 count
- Owner
- Town / Township
- Town or Township Highway Agency
About this bridge
TR129 over Donohue Run is a concrete tee beam carrying TR129 over Donohue Run in Mercer County, Illinois. It was built in 1974, so it is 51 years old, older 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 100 vehicles a day, roughly 30% of them trucks, projected to reach 101 by 2046. The structure is 98 ft (29.9 m) long and 30 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 7 Good | Some minor problems. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 TR129 over Donohue Run built?
It was built in 1974, making it 51 years old in 2025.
What condition is TR129 over Donohue Run 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 September 2024.
How much traffic does TR129 over Donohue Run carry?
About 100 vehicles per day (2024 count), of which roughly 30% are trucks.
How long is TR129 over Donohue Run?
The structure is 98 ft (29.9 m) long with a longest span of 32 ft (9.8 m) and a deck 30 ft wide.
Who owns TR129 over Donohue Run?
It is owned by the Town or Township Highway Agency.