IRR BIA RTE 123 over South Fork Valley Creek
PoorSanders County, Montana · 10.3 KM from US HWY 93 · Structure no. 00000000000P839
- Built
- 1995
- 30 years old, rebuilt 2011
- Condition
- Poor
- inspected January 2021
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 28 ft
- 1 main span
- Daily traffic
- 20
- 2021 count
- Owner
- Federal
- Bureau of Indian Affairs
About this bridge
IRR BIA RTE 123 over South Fork Valley Creek is a wood or timber stringer/multi-beam or girder carrying IRR BIA RTE 123 over South Fork Valley Creek in Sanders County, Montana. It was built in 1995 and reconstructed in 2011, so it is 30 years old, younger than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 3 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: open, posting recommended but not legally implemented.
It carries about 20 vehicles a day, roughly 20% of them trucks, projected to reach 40 by 2031. The structure is 28 ft (8.4 m) long and 16 ft wide. If it were closed, the detour would be 19.9 mi (32 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 7 Good | Some minor problems. |
| Superstructure | 3 Serious | Loss of section, deterioration, spalling or scour have seriously affected primary structural components. |
| Substructure | 8 Very Good | No problems noted. |
| Channel and channel protection | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was IRR BIA RTE 123 over South Fork Valley Creek built?
It was built in 1995, making it 30 years old in 2025. It was reconstructed in 2011.
What condition is IRR BIA RTE 123 over South Fork Valley Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in January 2021.
How much traffic does IRR BIA RTE 123 over South Fork Valley Creek carry?
About 20 vehicles per day (2021 count), of which roughly 20% are trucks.
How long is IRR BIA RTE 123 over South Fork Valley Creek?
The structure is 28 ft (8.4 m) long with a longest span of 26 ft (7.8 m) and a deck 16 ft wide.
Who owns IRR BIA RTE 123 over South Fork Valley Creek?
It is owned by the Bureau of Indian Affairs.