Stp 7343;MAIN ST over Boise River
FairAda County, Idaho · In Boise;main St. Wbl · Structure no. 000000000012775
- Built
- 1965
- 60 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 284 ft
- 4 main spans
- Daily traffic
- 14,000
- 2023 count
- Owner
- County
- County Highway Agency
About this bridge
Stp 7343;MAIN ST over Boise River is a prestressed concrete stringer/multi-beam or girder carrying Stp 7343;MAIN ST over Boise River in Ada County, Idaho. It was built in 1965, so it is 60 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 14,000 vehicles a day, roughly 5% of them trucks, projected to reach 21,000 by 2042. The structure is 284 ft (86.6 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
| Superstructure | 7 Good | Some minor problems. |
| Substructure | 6 Satisfactory | Structural elements show some minor deterioration. |
| 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 Stp 7343;MAIN ST over Boise River built?
It was built in 1965, making it 60 years old in 2025.
What condition is Stp 7343;MAIN ST over Boise River 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 September 2024.
How much traffic does Stp 7343;MAIN ST over Boise River carry?
About 14,000 vehicles per day (2023 count), of which roughly 5% are trucks.
How long is Stp 7343;MAIN ST over Boise River?
The structure is 284 ft (86.6 m) long with a longest span of 69 ft (21 m) and a deck 58 ft wide.
Who owns Stp 7343;MAIN ST over Boise River?
It is owned by the County Highway Agency.