S 512 over Flint Creek
GoodGranite County, Montana · 1M E Hall · Structure no. S00512000+07001
- Built
- 1964
- 61 years old
- Condition
- Good
- inspected July 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 103 ft
- 2 main spans
- Daily traffic
- 222
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
S 512 over Flint Creek is a prestressed concrete stringer/multi-beam or girder carrying S 512 over Flint Creek in Granite County, Montana. It was built in 1964, so it is 61 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 222 vehicles a day, roughly 1% of them trucks, projected to reach 233 by 2043. The structure is 103 ft (31.4 m) long and 27 ft wide. If it were closed, the detour would be 8.7 mi (14 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 | 8 Very Good | No problems noted. |
| 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 512 over Flint Creek built?
It was built in 1964, making it 61 years old in 2025.
What condition is S 512 over Flint Creek 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 July 2024.
How much traffic does S 512 over Flint Creek carry?
About 222 vehicles per day (2023 count), of which roughly 1% are trucks.
How long is S 512 over Flint Creek?
The structure is 103 ft (31.4 m) long with a longest span of 50 ft (15.2 m) and a deck 27 ft wide.
Who owns S 512 over Flint Creek?
It is owned by the State Highway Agency.