SH 3 over ST Maries R(mashburn Br)
FairBenewah County, Idaho · 12.3 S. ST Maries · Structure no. 000000000018860
- Built
- 1961
- 64 years old, rebuilt 2013
- Condition
- Fair
- inspected October 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 167 ft
- 3 main spans
- Daily traffic
- 1,700
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
SH 3 over ST Maries R(mashburn Br) is a prestressed concrete stringer/multi-beam or girder carrying SH 3 over ST Maries R(mashburn Br) in Benewah County, Idaho. It was built in 1961 and reconstructed in 2013, so it is 64 years old, older than the Idaho average of 45.3 years.
The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 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 1,700 vehicles a day, roughly 28% of them trucks, projected to reach 2,550 by 2042. The structure is 167 ft (50.9 m) long and 33 ft wide. If it were closed, the detour would be 87 mi (140 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 | 7 Good | Some minor problems. |
| Superstructure | 8 Very Good | No problems noted. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| Channel and channel protection | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was SH 3 over ST Maries R(mashburn Br) built?
It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2013.
What condition is SH 3 over ST Maries R(mashburn Br) 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 October 2024.
How much traffic does SH 3 over ST Maries R(mashburn Br) carry?
About 1,700 vehicles per day (2023 count), of which roughly 28% are trucks.
How long is SH 3 over ST Maries R(mashburn Br)?
The structure is 167 ft (50.9 m) long with a longest span of 86 ft (26.2 m) and a deck 33 ft wide.
Who owns SH 3 over ST Maries R(mashburn Br)?
It is owned by the State Highway Agency.