Chicago St. over Boise River
FairCanyon County, Idaho · In Caldwell · Structure no. 000000000021770
- Built
- 1980
- 45 years old
- Condition
- Fair
- inspected September 2024
- Type
- Stringer/Multi-beam or Girder
- Prestressed Concrete
- Length
- 208 ft
- 3 main spans
- Daily traffic
- 1,000
- 2023 count
- Owner
- City
- City or Municipal Highway Agency
About this bridge
Chicago St. over Boise River is a prestressed concrete stringer/multi-beam or girder carrying Chicago St. over Boise River in Canyon County, Idaho. It was built in 1980, so it is 45 years old, younger 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 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,500 by 2039. The structure is 208 ft (63.4 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 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 | 6 Satisfactory | Structural elements show some minor deterioration. |
Structure
Traffic and service
Ownership and planned work
Frequently asked questions
When was Chicago St. over Boise River built?
It was built in 1980, making it 45 years old in 2025.
What condition is Chicago 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 Chicago St. over Boise River carry?
About 1,000 vehicles per day (2023 count), of which roughly 10% are trucks.
How long is Chicago St. over Boise River?
The structure is 208 ft (63.4 m) long with a longest span of 68 ft (20.7 m) and a deck 44 ft wide.
Who owns Chicago St. over Boise River?
It is owned by the City or Municipal Highway Agency.