Stc 3750;MIDDLETON over Boise River
GoodCanyon County, Idaho · 0.6 S. 0.3 E. Middleton · Structure no. 000000000019726
- Built
- 2004
- 21 years old
- Condition
- Good
- inspected November 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 433 ft
- 5 main spans
- Daily traffic
- 11,000
- 2023 count
- Owner
- Local
- Other Local Agency
About this bridge
Stc 3750;MIDDLETON over Boise River is a prestressed concrete stringer/multi-beam or girder carrying Stc 3750;MIDDLETON over Boise River in Canyon County, Idaho. It was built in 2004, so it is 21 years old, younger than the Idaho average of 45.3 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 11,000 vehicles a day, roughly 9% of them trucks, projected to reach 16,500 by 2042. The structure is 433 ft (132 m) long and 53 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 | 7 Good | Some minor problems. |
| Substructure | 7 Good | Some minor problems. |
| Channel and channel protection | 7 Good | Some minor problems. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Stc 3750;MIDDLETON over Boise River built?
It was built in 2004, making it 21 years old in 2025.
What condition is Stc 3750;MIDDLETON over Boise River 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 November 2024.
How much traffic does Stc 3750;MIDDLETON over Boise River carry?
About 11,000 vehicles per day (2023 count), of which roughly 9% are trucks.
How long is Stc 3750;MIDDLETON over Boise River?
The structure is 433 ft (132 m) long with a longest span of 83 ft (25.3 m) and a deck 53 ft wide.
Who owns Stc 3750;MIDDLETON over Boise River?
It is owned by the Other Local Agency.