US 87-MT 3-MT 200 over Missouri RIVER-U5205-RR
FairCascade County, Montana · Great FALLS-10th Ave S · Structure no. P00060094+08281
- Built
- 1983
- 42 years old
- Condition
- Fair
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Steel Continuous
- Length
- 2,121 ft
- 6 main spans
- Daily traffic
- 13,666
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 87-MT 3-MT 200 over Missouri RIVER-U5205-RR is a steel continuous stringer/multi-beam or girder carrying US 87-MT 3-MT 200 over Missouri RIVER-U5205-RR in Cascade County, Montana. It was built in 1983, so it is 42 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 13,666 vehicles a day, roughly 2% of them trucks, projected to reach 14,349 by 2043. The structure is 2,121 ft (646.6 m) long and 52 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 87-MT 3-MT 200 over Missouri RIVER-U5205-RR built?
It was built in 1983, making it 42 years old in 2025.
What condition is US 87-MT 3-MT 200 over Missouri RIVER-U5205-RR 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 2024.
How much traffic does US 87-MT 3-MT 200 over Missouri RIVER-U5205-RR carry?
About 13,666 vehicles per day (2023 count), of which roughly 2% are trucks.
How long is US 87-MT 3-MT 200 over Missouri RIVER-U5205-RR?
The structure is 2,121 ft (646.6 m) long with a longest span of 185 ft (56.4 m) and a deck 52 ft wide.
Who owns US 87-MT 3-MT 200 over Missouri RIVER-U5205-RR?
It is owned by the State Highway Agency.