S Boulder RD over Lwr S Boulder River 066
GoodMadison County, Montana · 5M S Jefferson Island · Structure no. L29062002+05001
- Built
- 2003
- 22 years old
- Condition
- Good
- inspected April 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 47 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
S Boulder RD over Lwr S Boulder River 066 is a prestressed concrete tee beam carrying S Boulder RD over Lwr S Boulder River 066 in Madison County, Montana. It was built in 2003, so it is 22 years old, younger than the Montana average of 47 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 47 ft (14.3 m) long and 26 ft wide. If it were closed, the detour would be 8.1 mi (13 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S Boulder RD over Lwr S Boulder River 066 built?
It was built in 2003, making it 22 years old in 2025.
What condition is S Boulder RD over Lwr S Boulder River 066 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 S Boulder RD over Lwr S Boulder River 066 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is S Boulder RD over Lwr S Boulder River 066?
The structure is 47 ft (14.3 m) long with a longest span of 45 ft (13.7 m) and a deck 26 ft wide.
Who owns S Boulder RD over Lwr S Boulder River 066?
It is owned by the County Highway Agency.