Sth 16 over Rock River
FairJefferson County, Wisconsin · 1.0M E JCT Cth F · Structure no. B28001200000000
- Built
- 1975
- 50 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete Continuous
- Length
- 261 ft
- 3 main spans
- Daily traffic
- 7,800
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Sth 16 over Rock River is a prestressed concrete continuous stringer/multi-beam or girder carrying Sth 16 over Rock River in Jefferson County, Wisconsin. It was built in 1975, so it is 50 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 5 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 7,800 vehicles a day, roughly 8% of them trucks, projected to reach 9,360 by 2042. The structure is 261 ft (79.7 m) long and 47 ft wide. If it were closed, the detour would be 5 mi (8 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 16 over Rock River built?
It was built in 1975, making it 50 years old in 2025.
What condition is Sth 16 over Rock 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 September 2024.
How much traffic does Sth 16 over Rock River carry?
About 7,800 vehicles per day (2022 count), of which roughly 8% are trucks.
How long is Sth 16 over Rock River?
The structure is 261 ft (79.7 m) long with a longest span of 85 ft (25.9 m) and a deck 47 ft wide.
Who owns Sth 16 over Rock River?
It is owned by the State Highway Agency.