US Bridges

Bethel Street over Ridenbaugh Canal

Good

Ada County, Idaho · In Boise · Structure no. 000000000025743

Built
1998
27 years old
Condition
Good
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
51 ft
1 main span
Daily traffic
1,000
2023 count
Owner
County
County Highway Agency

About this bridge

Bethel Street over Ridenbaugh Canal is a steel stringer/multi-beam or girder carrying Bethel Street over Ridenbaugh Canal in Ada County, Idaho. It was built in 1998, so it is 27 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 1,000 vehicles a day, roughly 10% of them trucks, projected to reach 1,500 by 2039. The structure is 51 ft (15.5 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesBethel Street
CrossesRidenbaugh Canal
LocationIn Boise
RouteCity Street 0
StateIdaho
Coordinates43.60639, -116.27042
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionMarch 2023
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 alignment6: Equal to present minimum criteria
Operating rating85 US tons
Inventory rating50 US tons

Structure

MaterialSteel
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length51 ft (15.5 m)
Longest span48 ft (14.6 m)
Deck width58 ft (17.6 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2023)
Projected traffic1,500 by 2039
Trucks10%
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 Bethel Street over Ridenbaugh Canal built?

It was built in 1998, making it 27 years old in 2025.

What condition is Bethel 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 March 2023.

How much traffic does Bethel Street over Ridenbaugh Canal carry?

About 1,000 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Bethel Street over Ridenbaugh Canal?

The structure is 51 ft (15.5 m) long with a longest span of 48 ft (14.6 m) and a deck 58 ft wide.

Who owns Bethel Street over Ridenbaugh Canal?

It is owned by the County Highway Agency.