Fdr 345 over Iron Creek
GoodCuster County, South Dakota · T 2 S R 6 E Sec 31 · Structure no. 020303000010097
- Built
- 1956
- 69 years old, rebuilt 1986
- Condition
- Good
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 23 ft
- 1 main span
- Daily traffic
- 25
- 1992 count
- Owner
- Federal
- U.S. Forest Service
About this bridge
Fdr 345 over Iron Creek is a wood or timber stringer/multi-beam or girder carrying Fdr 345 over Iron Creek in Custer County, South Dakota. It was built in 1956 and reconstructed in 1986, so it is 69 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 25 vehicles a day, projected to reach 37 by 2045. The structure is 23 ft (7.1 m) long and 15 ft wide. If it were closed, the detour would be 620.7 mi (999 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 | 8 Very Good | No problems noted. |
| 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 Fdr 345 over Iron Creek built?
It was built in 1956, making it 69 years old in 2025. It was reconstructed in 1986.
What condition is Fdr 345 over Iron 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 July 2023.
How much traffic does Fdr 345 over Iron Creek carry?
About 25 vehicles per day (1992 count).
How long is Fdr 345 over Iron Creek?
The structure is 23 ft (7.1 m) long with a longest span of 22 ft (6.6 m) and a deck 15 ft wide.
Who owns Fdr 345 over Iron Creek?
It is owned by the U.S. Forest Service.