Quaintance LN over Boulder Ditch 029
GoodJefferson County, Montana · 13M SE Boulder · Structure no. L22308006+05001
- Built
- 2010
- 15 years old
- Condition
- Good
- inspected September 2024
- Type
- Slab
- Concrete
- Length
- 30 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Quaintance LN over Boulder Ditch 029 is a concrete slab carrying Quaintance LN over Boulder Ditch 029 in Jefferson County, Montana. It was built in 2010, so it is 15 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 30 ft (9.1 m) long and 40 ft wide. If it were closed, the detour would be 11.2 mi (18 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Quaintance LN over Boulder Ditch 029 built?
It was built in 2010, making it 15 years old in 2025.
What condition is Quaintance LN over Boulder Ditch 029 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 September 2024.
How much traffic does Quaintance LN over Boulder Ditch 029 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Quaintance LN over Boulder Ditch 029?
The structure is 30 ft (9.1 m) long with a longest span of 30 ft (9.1 m) and a deck 40 ft wide.
Who owns Quaintance LN over Boulder Ditch 029?
It is owned by the County Highway Agency.