US Bridges

US 26 over Eagle Rock Canal

Fair

Bonneville County, Idaho · 1.0 S. Ririe · Structure no. 000000000013275

Built
1969
56 years old
Condition
Fair
inspected March 2022
Type
Tee Beam
Concrete
Length
46 ft
1 main span
Daily traffic
5,800
2023 count
Owner
State
State Highway Agency

About this bridge

US 26 over Eagle Rock Canal is a concrete tee beam carrying US 26 over Eagle Rock Canal in Bonneville County, Idaho. It was built in 1969, so it is 56 years old, older 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 5,800 vehicles a day, roughly 10% of them trucks, projected to reach 8,700 by 2042. The structure is 46 ft (14 m) long and 43 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesUS 26
CrossesEagle Rock Canal
Location1.0 S. Ririe
RouteU.S. Route 26
CountyBonneville County
StateIdaho
Coordinates43.60878, -111.79869
Functional classRural Principal Arterial - Other

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMarch 2022
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length46 ft (14 m)
Longest span45 ft (13.7 m)
Deck width43 ft (13 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,800 (2023)
Projected traffic8,700 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 US 26 over Eagle Rock Canal built?

It was built in 1969, making it 56 years old in 2025.

What condition is US 26 over Eagle Rock 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 March 2022.

How much traffic does US 26 over Eagle Rock Canal carry?

About 5,800 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is US 26 over Eagle Rock Canal?

The structure is 46 ft (14 m) long with a longest span of 45 ft (13.7 m) and a deck 43 ft wide.

Who owns US 26 over Eagle Rock Canal?

It is owned by the State Highway Agency.