S 69 over Little Boulder River
FairJefferson County, Montana · 3M SE Boulder · Structure no. 000000000006168
- Built
- 2016
- 9 years old
- Condition
- Fair
- inspected February 2025
- Type
- Slab
- Concrete Continuous
- Length
- 96 ft
- 3 main spans
- Daily traffic
- 913
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 69 over Little Boulder River is a concrete continuous slab carrying S 69 over Little Boulder River in Jefferson County, Montana. It was built in 2016, so it is 9 years old, younger than the Montana average of 47 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 913 vehicles a day, roughly 13% of them trucks, projected to reach 968 by 2043. The structure is 96 ft (29.4 m) long and 43 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 | 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 S 69 over Little Boulder River built?
It was built in 2016, making it 9 years old in 2025.
What condition is S 69 over Little Boulder River 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 February 2025.
How much traffic does S 69 over Little Boulder River carry?
About 913 vehicles per day (2023 count), of which roughly 13% are trucks.
How long is S 69 over Little Boulder River?
The structure is 96 ft (29.4 m) long with a longest span of 38 ft (11.6 m) and a deck 43 ft wide.
Who owns S 69 over Little Boulder River?
It is owned by the State Highway Agency.