US Bridges

Boise Street over Power Canal

Good

Boise County, Idaho · Horseshoe Bend · Structure no. 000000000026678

Built
1995
30 years old
Condition
Good
inspected October 2021
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
101 ft
2 main spans
Daily traffic
60
2023 count
Owner
Private
Private (other than railroad)

About this bridge

Boise Street over Power Canal is a prestressed concrete stringer/multi-beam or girder carrying Boise Street over Power Canal in Boise County, Idaho. It was built in 1995, so it is 30 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 60 vehicles a day, roughly 5% of them trucks, projected to reach 90 by 2039. The structure is 101 ft (30.8 m) long and 24 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesBoise Street
CrossesPower Canal
LocationHorseshoe Bend
RouteCity Street 0
StateIdaho
Coordinates43.91398, -116.201
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionOctober 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating103.9 US tons
Inventory rating59 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length101 ft (30.8 m)
Longest span49 ft (14.9 m)
Deck width24 ft (7.3 m)
Roadway width21 ft (6.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic60 (2023)
Projected traffic90 by 2039
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerPrivate (other than railroad)
Maintained byPrivate (other than railroad)
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was Boise Street over Power Canal built?

It was built in 1995, making it 30 years old in 2025.

What condition is Boise Street over Power 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 2021.

How much traffic does Boise Street over Power Canal carry?

About 60 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Boise Street over Power Canal?

The structure is 101 ft (30.8 m) long with a longest span of 49 ft (14.9 m) and a deck 24 ft wide.

Who owns Boise Street over Power Canal?

It is owned by the Private (other than railroad).