S 47 over Low Line Ditch
GoodBig Horn County, Montana · 5M N Hardin · Structure no. P00048005+04501
- Built
- 1989
- 36 years old
- Condition
- Good
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 42 ft
- 1 main span
- Daily traffic
- 852
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 47 over Low Line Ditch is a prestressed concrete stringer/multi-beam or girder carrying S 47 over Low Line Ditch in Big Horn County, Montana. It was built in 1989, so it is 36 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 852 vehicles a day, roughly 14% of them trucks, projected to reach 895 by 2043. The structure is 42 ft (12.8 m) long and 38 ft wide. If it were closed, the detour would be 123.7 mi (199 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 S 47 over Low Line Ditch built?
It was built in 1989, making it 36 years old in 2025.
What condition is S 47 over Low Line Ditch 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 S 47 over Low Line Ditch carry?
About 852 vehicles per day (2023 count), of which roughly 14% are trucks.
How long is S 47 over Low Line Ditch?
The structure is 42 ft (12.8 m) long with a longest span of 40 ft (12.2 m) and a deck 38 ft wide.
Who owns S 47 over Low Line Ditch?
It is owned by the State Highway Agency.