Expo Pkwy over Grant Creek 117
FairMissoula County, Montana · Missoula-Expo Pkwy · Structure no. M32081000+00701
- Built
- 1997
- 28 years old
- Condition
- Fair
- inspected September 2023
- Type
- Slab
- Prestressed Concrete
- Length
- 45 ft
- 1 main span
- Daily traffic
- 100
- 2025 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Expo Pkwy over Grant Creek 117 is a prestressed concrete slab carrying Expo Pkwy over Grant Creek 117 in Missoula County, Montana. It was built in 1997, so it is 28 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 100 vehicles a day, roughly 3% of them trucks, projected to reach 100 by 2040. The structure is 45 ft (13.7 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
| 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 Expo Pkwy over Grant Creek 117 built?
It was built in 1997, making it 28 years old in 2025.
What condition is Expo Pkwy over Grant Creek 117 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 September 2023.
How much traffic does Expo Pkwy over Grant Creek 117 carry?
About 100 vehicles per day (2025 count), of which roughly 3% are trucks.
How long is Expo Pkwy over Grant Creek 117?
The structure is 45 ft (13.7 m) long with a longest span of 45 ft (13.7 m) and a deck 58 ft wide.
Who owns Expo Pkwy over Grant Creek 117?
It is owned by the City or Municipal Highway Agency and maintained by the County Highway Agency.