SH 74 over Rock Creek
GoodTwin Falls County, Idaho · In Twin Falls · Structure no. 000000000015226
- Built
- 1993
- 32 years old
- Condition
- Good
- inspected April 2023
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 433 ft
- 4 main spans
- Daily traffic
- 19,000
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SH 74 over Rock Creek is a prestressed concrete stringer/multi-beam or girder carrying SH 74 over Rock Creek in Twin Falls County, Idaho. It was built in 1993, so it is 32 years old, younger than the Idaho average of 45.3 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 19,000 vehicles a day, roughly 3% of them trucks, projected to reach 28,500 by 2042. The structure is 433 ft (132 m) long and 78 ft wide. If it were closed, the detour would be 1.9 mi (3 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 SH 74 over Rock Creek built?
It was built in 1993, making it 32 years old in 2025.
What condition is SH 74 over Rock 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 April 2023.
How much traffic does SH 74 over Rock Creek carry?
About 19,000 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is SH 74 over Rock Creek?
The structure is 433 ft (132 m) long with a longest span of 105 ft (32 m) and a deck 78 ft wide.
Who owns SH 74 over Rock Creek?
It is owned by the State Highway Agency.