SR29 over Big Run
GoodMercer County, Ohio · 3.31 Mi. W. of Jct. SR118 · Structure no. 5400155
- Built
- 1956
- 69 years old
- Condition
- Good
- inspected September 2024
- Type
- Slab
- Concrete Continuous
- Length
- 81 ft
- 3 main spans
- Daily traffic
- 2,796
- 2015 count
- Owner
- State
- State Highway Agency
About this bridge
SR29 over Big Run is a concrete continuous slab carrying SR29 over Big Run in Mercer County, Ohio. It was built in 1956, so it is 69 years old, older than the Ohio average of 47.3 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 2,796 vehicles a day, roughly 33% of them trucks, projected to reach 3,881 by 2035. The structure is 81 ft (24.7 m) long and 40 ft wide. If it were closed, the detour would be 16.8 mi (27 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 | 8 Very Good | No problems noted. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SR29 over Big Run built?
It was built in 1956, making it 69 years old in 2025.
What condition is SR29 over Big Run 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 2024.
How much traffic does SR29 over Big Run carry?
About 2,796 vehicles per day (2015 count), of which roughly 33% are trucks.
How long is SR29 over Big Run?
The structure is 81 ft (24.7 m) long with a longest span of 30 ft (9.1 m) and a deck 40 ft wide.
Who owns SR29 over Big Run?
It is owned by the State Highway Agency.