Nash ST over Spearfish Ck
FairLawrence County, South Dakota · Nash ST - Spearfish · Structure no. 000000041092076
- Built
- 1998
- 27 years old
- Condition
- Fair
- inspected October 2023
- Type
- Frame
- Concrete Continuous
- Length
- 38 ft
- 1 main span
- Daily traffic
- 500
- 2022 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Nash ST over Spearfish Ck is a concrete continuous frame carrying Nash ST over Spearfish Ck in Lawrence County, South Dakota. It was built in 1998, so it is 27 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 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 500 vehicles a day, roughly 5% of them trucks, projected to reach 500 by 2035. The structure is 38 ft (11.7 m) long and 50 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Nash ST over Spearfish Ck built?
It was built in 1998, making it 27 years old in 2025.
What condition is Nash ST over Spearfish Ck 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 October 2023.
How much traffic does Nash ST over Spearfish Ck carry?
About 500 vehicles per day (2022 count), of which roughly 5% are trucks.
How long is Nash ST over Spearfish Ck?
The structure is 38 ft (11.7 m) long with a longest span of 37 ft (11.2 m) and a deck 50 ft wide.
Who owns Nash ST over Spearfish Ck?
It is owned by the City or Municipal Highway Agency.