Sth 170 over Hay River
GoodDunn County, Wisconsin · 1.4M E JCT Sth 25 · Structure no. B17018000000000
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected August 2024
- Type
- Slab
- Concrete Continuous
- Length
- 226 ft
- 4 main spans
- Daily traffic
- 850
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Sth 170 over Hay River is a concrete continuous slab carrying Sth 170 over Hay River in Dunn County, Wisconsin. It was built in 2003, so it is 22 years old, younger than the Wisconsin average of 40.3 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 850 vehicles a day, roughly 10% of them trucks, projected to reach 1,020 by 2043. The structure is 226 ft (69 m) long and 33 ft wide. If it were closed, the detour would be 37.9 mi (61 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 | 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 Sth 170 over Hay River built?
It was built in 2003, making it 22 years old in 2025.
What condition is Sth 170 over Hay River 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 August 2024.
How much traffic does Sth 170 over Hay River carry?
About 850 vehicles per day (2022 count), of which roughly 10% are trucks.
How long is Sth 170 over Hay River?
The structure is 226 ft (69 m) long with a longest span of 65 ft (19.8 m) and a deck 33 ft wide.
Who owns Sth 170 over Hay River?
It is owned by the State Highway Agency.