US Bridges

SH 44 over Willow Creek

Fair

Canyon County, Idaho · At Middleton · Structure no. 000000000014265

Built
1953
72 years old
Condition
Fair
inspected February 2024
Type
Frame
Concrete
Length
26 ft
1 main span
Daily traffic
36,000
2023 count
Owner
State
State Highway Agency

About this bridge

SH 44 over Willow Creek is a concrete frame carrying SH 44 over Willow Creek in Canyon County, Idaho. It was built in 1953, so it is 72 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 36,000 vehicles a day, roughly 2% of them trucks, projected to reach 54,000 by 2042. The structure is 26 ft (7.9 m) long and 50 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSH 44
CrossesWillow Creek
LocationAt Middleton
RouteState Highway 44
CountyCanyon County
StateIdaho
Coordinates43.70639, -116.63083
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating61 US tons
Inventory rating36 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length26 ft (7.9 m)
Longest span24 ft (7.3 m)
Deck width50 ft (15.2 m)
Roadway width48 ft (14.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic36,000 (2023)
Projected traffic54,000 by 2042
Trucks2%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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 SH 44 over Willow Creek built?

It was built in 1953, making it 72 years old in 2025.

What condition is SH 44 over Willow Creek 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 February 2024.

How much traffic does SH 44 over Willow Creek carry?

About 36,000 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is SH 44 over Willow Creek?

The structure is 26 ft (7.9 m) long with a longest span of 24 ft (7.3 m) and a deck 50 ft wide.

Who owns SH 44 over Willow Creek?

It is owned by the State Highway Agency.