S 78 FH 83 over Red Lodge Creek
PoorPosted for loadCarbon County, Montana · 7M SE Roscoe · Structure no. P00078012+08701
- Built
- 1953
- 72 years old
- Condition
- Poor
- inspected September 2023
- Type
- Stringer/Multi-beam or Girder
- Wood or Timber
- Length
- 27 ft
- 1 main span
- Daily traffic
- 481
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 78 FH 83 over Red Lodge Creek is a wood or timber stringer/multi-beam or girder carrying S 78 FH 83 over Red Lodge Creek in Carbon County, Montana. It was built in 1953, so it is 72 years old, older than the Montana average of 47 years.
The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for load restriction.
It carries about 481 vehicles a day, roughly 4% of them trucks, projected to reach 505 by 2043. The structure is 27 ft (8.2 m) long and 26 ft wide. If it were closed, the detour would be 123.7 mi (199 km).
Location
Open in Google MapsCondition and inspection
The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.
| Component | Rating | Meaning |
|---|---|---|
| Deck | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Substructure | 4 Poor | Advanced section loss, deterioration, spalling or scour. |
| Channel and channel protection | 5 Fair | All primary structural elements are sound but may have minor section loss, cracking, spalling or scour. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was S 78 FH 83 over Red Lodge Creek built?
It was built in 1953, making it 72 years old in 2025.
What condition is S 78 FH 83 over Red Lodge Creek in?
The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in September 2023.
How much traffic does S 78 FH 83 over Red Lodge Creek carry?
About 481 vehicles per day (2023 count), of which roughly 4% are trucks.
How long is S 78 FH 83 over Red Lodge Creek?
The structure is 27 ft (8.2 m) long with a longest span of 25 ft (7.6 m) and a deck 26 ft wide.
Who owns S 78 FH 83 over Red Lodge Creek?
It is owned by the State Highway Agency.