US014A over Spearfish Ck
FairLawrence County, South Dakota · 2.9 W & S I 90 Exit 14 · Structure no. 000000041099096
- Built
- 1979
- 46 years old
- Condition
- Fair
- inspected December 2024
- Type
- Slab
- Concrete Continuous
- Length
- 106 ft
- 2 main spans
- Daily traffic
- 2,212
- 2024 count
- Owner
- State
- State Highway Agency
About this bridge
US014A over Spearfish Ck is a concrete continuous slab carrying US014A over Spearfish Ck in Lawrence County, South Dakota. It was built in 1979, so it is 46 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 2,212 vehicles a day, roughly 4% of them trucks, projected to reach 3,205 by 2044. The structure is 106 ft (32.3 m) long and 35 ft wide. If it were closed, the detour would be 9.9 mi (16 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 | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US014A over Spearfish Ck built?
It was built in 1979, making it 46 years old in 2025.
What condition is US014A 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 December 2024.
How much traffic does US014A over Spearfish Ck carry?
About 2,212 vehicles per day (2024 count), of which roughly 4% are trucks.
How long is US014A over Spearfish Ck?
The structure is 106 ft (32.3 m) long with a longest span of 49 ft (15 m) and a deck 35 ft wide.
Who owns US014A over Spearfish Ck?
It is owned by the State Highway Agency.