Sth 78 over Dunlap Creek
FairDane County, Wisconsin · 1.4M N JCT Sth 19 to E · Structure no. B13042800000000
- Built
- 1993
- 32 years old
- Condition
- Fair
- inspected January 2025
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 50 ft
- 1 main span
- Daily traffic
- 3,900
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Sth 78 over Dunlap Creek is a prestressed concrete stringer/multi-beam or girder carrying Sth 78 over Dunlap Creek in Dane County, Wisconsin. It was built in 1993, so it is 32 years old, younger 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 3,900 vehicles a day, roughly 6% of them trucks, projected to reach 4,680 by 2042. The structure is 50 ft (15.3 m) long and 37 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| 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 Dunlap Creek built?
It was built in 1993, making it 32 years old in 2025.
What condition is Sth 78 over Dunlap Creek 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 January 2025.
How much traffic does Sth 78 over Dunlap Creek carry?
About 3,900 vehicles per day (2022 count), of which roughly 6% are trucks.
How long is Sth 78 over Dunlap Creek?
The structure is 50 ft (15.3 m) long with a longest span of 49 ft (14.8 m) and a deck 37 ft wide.
Who owns Sth 78 over Dunlap Creek?
It is owned by the State Highway Agency.