US 20 26 Ramp over Boise Rvr Slough;ramp
GoodAda County, Idaho · Boise;fairview/Chinden Ic · Structure no. 000000000018998
- Built
- 1991
- 34 years old
- Condition
- Good
- inspected June 2022
- Type
- Box Beam or Girders - Single or Spread
- Prestressed Concrete Continuous
- Length
- 252 ft
- 3 main spans
- Daily traffic
- 6,500
- 2023 count
- Owner
- State
- State Highway Agency
About this bridge
US 20 26 Ramp over Boise Rvr Slough;ramp is a prestressed concrete continuous box beam or girders - single or spread carrying US 20 26 Ramp over Boise Rvr Slough;ramp in Ada County, Idaho. It was built in 1991, so it is 34 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 6,500 vehicles a day, roughly 3% of them trucks, projected to reach 9,750 by 2042. The structure is 252 ft (76.8 m) long and 28 ft wide. If it were closed, the detour would be 3.7 mi (6 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 | 8 Very Good | No problems noted. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was US 20 26 Ramp over Boise Rvr Slough;ramp built?
It was built in 1991, making it 34 years old in 2025.
What condition is US 20 26 Ramp over Boise Rvr Slough;ramp 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 June 2022.
How much traffic does US 20 26 Ramp over Boise Rvr Slough;ramp carry?
About 6,500 vehicles per day (2023 count), of which roughly 3% are trucks.
How long is US 20 26 Ramp over Boise Rvr Slough;ramp?
The structure is 252 ft (76.8 m) long with a longest span of 110 ft (33.5 m) and a deck 28 ft wide.
Who owns US 20 26 Ramp over Boise Rvr Slough;ramp?
It is owned by the State Highway Agency.