148th Street over Mansfield Slough
GoodBrown County, South Dakota · 0.4 East of Mansfield · Structure no. 000000007079480
- Built
- 2006
- 19 years old
- Condition
- Good
- inspected September 2021
- Type
- Culvert
- Concrete Continuous
- Length
- 42 ft
- 3 main spans
- Daily traffic
- 455
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
148th Street over Mansfield Slough is a concrete continuous culvert carrying 148th Street over Mansfield Slough in Brown County, South Dakota. It was built in 2006, so it is 19 years old, younger than the South Dakota average of 48.9 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 455 vehicles a day, roughly 9% of them trucks, projected to reach 580 by 2032. The structure is 42 ft (12.7 m) long. If it were closed, the detour would be 6.2 mi (10 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 |
|---|---|---|
| Channel and channel protection | 7 Good | Some minor problems. |
| Culvert | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was 148th Street over Mansfield Slough built?
It was built in 2006, making it 19 years old in 2025.
What condition is 148th Street over Mansfield Slough 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 September 2021.
How much traffic does 148th Street over Mansfield Slough carry?
About 455 vehicles per day (2022 count), of which roughly 9% are trucks.
How long is 148th Street over Mansfield Slough?
The structure is 42 ft (12.7 m) long with a longest span of 14 ft (4.3 m).
Who owns 148th Street over Mansfield Slough?
It is owned by the County Highway Agency.