Swamp RD over E Gallatin River 074
GoodGallatin County, Montana · 6M E Manhattan · Structure no. L16229000+08001
- Built
- 2008
- 17 years old
- Condition
- Good
- inspected September 2023
- Type
- Tee Beam
- Prestressed Concrete
- Length
- 102 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- County
- County Highway Agency
About this bridge
Swamp RD over E Gallatin River 074 is a prestressed concrete tee beam carrying Swamp RD over E Gallatin River 074 in Gallatin County, Montana. It was built in 2008, so it is 17 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 102 ft (31.2 m) long and 28 ft wide. If it were closed, the detour would be 9.9 mi (16 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 Swamp RD over E Gallatin River 074 built?
It was built in 2008, making it 17 years old in 2025.
What condition is Swamp RD over E Gallatin River 074 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 2023.
How much traffic does Swamp RD over E Gallatin River 074 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Swamp RD over E Gallatin River 074?
The structure is 102 ft (31.2 m) long with a longest span of 102 ft (31.2 m) and a deck 28 ft wide.
Who owns Swamp RD over E Gallatin River 074?
It is owned by the County Highway Agency.