US Bridges

SMA7553;FEDERAL Wy over Ridenbaugh Canal

Fair

Ada County, Idaho · In Boise;federal Way · Structure no. 000000000021451

Built
1991
34 years old
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
48 ft
1 main span
Daily traffic
9,300
2023 count
Owner
County
County Highway Agency

About this bridge

SMA7553;FEDERAL Wy over Ridenbaugh Canal is a concrete culvert carrying SMA7553;FEDERAL Wy over Ridenbaugh Canal 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 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 9,300 vehicles a day, roughly 6% of them trucks, projected to reach 13,950 by 2042. The structure is 48 ft (14.6 m) long and 100 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesSMA7553;FEDERAL Wy
CrossesRidenbaugh Canal
LocationIn Boise;federal Way
RouteCity Street 7553
CountyAda County
StateIdaho
Coordinates43.59736, -116.20997
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans1
Design loadHS 20
Structure length48 ft (14.6 m)
Longest span48 ft (14.6 m)
Deck width100 ft (30.5 m)
Roadway width53 ft (16.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,300 (2023)
Projected traffic13,950 by 2042
Trucks6%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed0.6 mi (1 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 SMA7553;FEDERAL Wy over Ridenbaugh Canal built?

It was built in 1991, making it 34 years old in 2025.

What condition is SMA7553;FEDERAL Wy over Ridenbaugh Canal 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 October 2023.

How much traffic does SMA7553;FEDERAL Wy over Ridenbaugh Canal carry?

About 9,300 vehicles per day (2023 count), of which roughly 6% are trucks.

How long is SMA7553;FEDERAL Wy over Ridenbaugh Canal?

The structure is 48 ft (14.6 m) long with a longest span of 48 ft (14.6 m) and a deck 100 ft wide.

Who owns SMA7553;FEDERAL Wy over Ridenbaugh Canal?

It is owned by the County Highway Agency.