HWY 463 over Rotten Grass Creek 008
GoodBig Horn County, Montana · 15M SW Lodge Grass · Structure no. L02090002+02001
- Built
- 1966
- 59 years old
- Condition
- Good
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 103 ft
- 2 main spans
- Daily traffic
- 49
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
HWY 463 over Rotten Grass Creek 008 is a prestressed concrete stringer/multi-beam or girder carrying HWY 463 over Rotten Grass Creek 008 in Big Horn County, Montana. It was built in 1966, so it is 59 years old, older 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 49 vehicles a day, roughly 4% of them trucks, projected to reach 51 by 2043. The structure is 103 ft (31.4 m) long and 34 ft wide. If it were closed, the detour would be 80.2 mi (129 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 HWY 463 over Rotten Grass Creek 008 built?
It was built in 1966, making it 59 years old in 2025.
What condition is HWY 463 over Rotten Grass Creek 008 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 October 2024.
How much traffic does HWY 463 over Rotten Grass Creek 008 carry?
About 49 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is HWY 463 over Rotten Grass Creek 008?
The structure is 103 ft (31.4 m) long with a longest span of 50 ft (15.2 m) and a deck 34 ft wide.
Who owns HWY 463 over Rotten Grass Creek 008?
It is owned by the County Highway Agency.