Sth 121 over Big Slough Creek
GoodTrempealeau County, Wisconsin · 1.3M E JCT Ush 53 to N · Structure no. B61017900000000
- Built
- 2004
- 21 years old
- Condition
- Good
- inspected October 2024
- Type
- Slab
- Concrete
- Length
- 38 ft
- 1 main span
- Daily traffic
- 1,100
- 2022 count
- Owner
- State
- State Highway Agency
About this bridge
Sth 121 over Big Slough Creek is a concrete slab carrying Sth 121 over Big Slough Creek in Trempealeau County, Wisconsin. It was built in 2004, so it is 21 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 1,100 vehicles a day, roughly 6% of them trucks, projected to reach 1,800 by 2043. The structure is 38 ft (11.7 m) long and 36 ft wide. If it were closed, the detour would be 40.4 mi (65 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 Sth 121 over Big Slough Creek built?
It was built in 2004, making it 21 years old in 2025.
What condition is Sth 121 over Big Slough Creek 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 October 2024.
How much traffic does Sth 121 over Big Slough Creek carry?
About 1,100 vehicles per day (2022 count), of which roughly 6% are trucks.
How long is Sth 121 over Big Slough Creek?
The structure is 38 ft (11.7 m) long with a longest span of 36 ft (11 m) and a deck 36 ft wide.
Who owns Sth 121 over Big Slough Creek?
It is owned by the State Highway Agency.