US Bridges

SH 75 over Bellevue Canal

Fair

Blaine County, Idaho · 4.4 S. Hailey · Structure no. 000000000017650

Built
1931
94 years old
Condition
Fair
inspected November 2024
Type
Frame
Concrete
Length
28 ft
1 main span
Daily traffic
7,000
2023 count
Owner
State
State Highway Agency

About this bridge

SH 75 over Bellevue Canal is a concrete frame carrying SH 75 over Bellevue Canal in Blaine County, Idaho. It was built in 1931, so it is 94 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 7,000 vehicles a day, roughly 21% of them trucks, projected to reach 10,500 by 2042. The structure is 28 ft (8.5 m) long and 38 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesSH 75
CrossesBellevue Canal
Location4.4 S. Hailey
RouteState Highway 75
CountyBlaine County
StateIdaho
Coordinates43.45069, -114.25464
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length28 ft (8.5 m)
Longest span28 ft (8.5 m)
Deck width38 ft (11.5 m)
Roadway width36 ft (11 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,000 (2023)
Projected traffic10,500 by 2042
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

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 SH 75 over Bellevue Canal built?

It was built in 1931, making it 94 years old in 2025.

What condition is SH 75 over Bellevue 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 November 2024.

How much traffic does SH 75 over Bellevue Canal carry?

About 7,000 vehicles per day (2023 count), of which roughly 21% are trucks.

How long is SH 75 over Bellevue Canal?

The structure is 28 ft (8.5 m) long with a longest span of 28 ft (8.5 m) and a deck 38 ft wide.

Who owns SH 75 over Bellevue Canal?

It is owned by the State Highway Agency.