Mattie V over Ninemile CR
FairMissoula County, Montana · Mattie V · Structure no. 011604000000128
- Built
- 1979
- 46 years old
- Condition
- Fair
- inspected July 2023
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 25 ft
- 1 main span
- Daily traffic
- 50
- Owner
- Federal
- U.S. Forest Service
About this bridge
Mattie V over Ninemile CR is a wood or timber stringer/multi-beam or girder carrying Mattie V over Ninemile CR in Missoula County, Montana. It was built in 1979, so it is 46 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 5 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 50 vehicles a day, projected to reach 75 by 2045. The structure is 25 ft (7.5 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Mattie V over Ninemile CR built?
It was built in 1979, making it 46 years old in 2025.
What condition is Mattie V over Ninemile CR 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 July 2023.
How much traffic does Mattie V over Ninemile CR carry?
About 50 vehicles per day (latest count).
How long is Mattie V over Ninemile CR?
The structure is 25 ft (7.5 m) long with a longest span of 23 ft (7 m) and a deck 16 ft wide.
Who owns Mattie V over Ninemile CR?
It is owned by the U.S. Forest Service.