Exit 10 Service RD over Spearfish Ck
GoodLawrence County, South Dakota · 0.2 W JCT US 85 · Structure no. 000000041092060
- Built
- 1971
- 54 years old
- Condition
- Good
- inspected July 2024
- Type
- Girder and Floorbeam System
- Steel Continuous
- Length
- 173 ft
- 3 main spans
- Daily traffic
- 2,000
- 2022 count
- Owner
- County
- County Highway Agency
About this bridge
Exit 10 Service RD over Spearfish Ck is a steel continuous girder and floorbeam system carrying Exit 10 Service RD over Spearfish Ck in Lawrence County, South Dakota. It was built in 1971, so it is 54 years old, older 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 2,000 vehicles a day, roughly 3% of them trucks, projected to reach 2,000 by 2032. The structure is 173 ft (52.7 m) long and 43 ft wide. If it were closed, the detour would be 5 mi (8 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 Exit 10 Service RD over Spearfish Ck built?
It was built in 1971, making it 54 years old in 2025.
What condition is Exit 10 Service RD over Spearfish Ck 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 July 2024.
How much traffic does Exit 10 Service RD over Spearfish Ck carry?
About 2,000 vehicles per day (2022 count), of which roughly 3% are trucks.
How long is Exit 10 Service RD over Spearfish Ck?
The structure is 173 ft (52.7 m) long with a longest span of 81 ft (24.8 m) and a deck 43 ft wide.
Who owns Exit 10 Service RD over Spearfish Ck?
It is owned by the County Highway Agency.