US Bridges

Owyhee Street over Ridenbaugh Canal

Good

Ada County, Idaho · In Boise · Structure no. 000000000026371

Built
1992
33 years old
Condition
Good
inspected October 2022
Type
Frame
Concrete
Length
32 ft
1 main span
Daily traffic
1,200
2023 count
Owner
County
County Highway Agency

About this bridge

Owyhee Street over Ridenbaugh Canal is a concrete frame carrying Owyhee Street over Ridenbaugh Canal in Ada County, Idaho. It was built in 1992, so it is 33 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 1,200 vehicles a day, roughly 20% of them trucks, projected to reach 1,800 by 2042. The structure is 32 ft (9.8 m) long and 57 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesOwyhee Street
CrossesRidenbaugh Canal
LocationIn Boise
RouteCity Street 0
StateIdaho
Coordinates43.59939, -116.22361
Functional classUrban Local

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionOctober 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating78 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length32 ft (9.8 m)
Longest span32 ft (9.8 m)
Deck width57 ft (17.3 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,200 (2023)
Projected traffic1,800 by 2042
Trucks20%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Owyhee Street over Ridenbaugh Canal built?

It was built in 1992, making it 33 years old in 2025.

What condition is Owyhee Street over Ridenbaugh Canal 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 October 2022.

How much traffic does Owyhee Street over Ridenbaugh Canal carry?

About 1,200 vehicles per day (2023 count), of which roughly 20% are trucks.

How long is Owyhee Street over Ridenbaugh Canal?

The structure is 32 ft (9.8 m) long with a longest span of 32 ft (9.8 m) and a deck 57 ft wide.

Who owns Owyhee Street over Ridenbaugh Canal?

It is owned by the County Highway Agency.