Sth 78 over Pecatonica River
FairLafayette County, Wisconsin · 1.8M N JCT Sth 11 to E · Structure no. B33000900000000
- Built
- 1970
- 55 years old, rebuilt 2020
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 167 ft
- 3 main spans
- Daily traffic
- 370
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Sth 78 over Pecatonica River is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 78 over Pecatonica River in Lafayette County, Wisconsin. It was built in 1970 and reconstructed in 2020, so it is 55 years old, older than the Wisconsin average of 40.3 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 370 vehicles a day, roughly 8% of them trucks, projected to reach 430 by 2041. The structure is 167 ft (50.9 m) long and 40 ft wide. If it were closed, the detour would be 21.7 mi (35 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 | 8 Very Good | No problems noted. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Sth 78 over Pecatonica River built?
It was built in 1970, making it 55 years old in 2025. It was reconstructed in 2020.
What condition is Sth 78 over Pecatonica River 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 July 2023.
How much traffic does Sth 78 over Pecatonica River carry?
About 370 vehicles per day (2022 count), of which roughly 8% are trucks.
How long is Sth 78 over Pecatonica River?
The structure is 167 ft (50.9 m) long with a longest span of 55 ft (16.9 m) and a deck 40 ft wide.
Who owns Sth 78 over Pecatonica River?
It is owned by the State Highway Agency.