US Bridges

STC3728;LAKE Hazel over Farr Lateral Canal

Fair

Ada County, Idaho · 3.8 N. 3.0 E. Kuna · Structure no. 000000000026141

Built
1992
33 years old, rebuilt 2022
Condition
Fair
inspected March 2023
Type
Frame
Concrete
Length
48 ft
1 main span
Daily traffic
5,100
2023 count
Owner
County
County Highway Agency

About this bridge

STC3728;LAKE Hazel over Farr Lateral Canal is a concrete frame carrying STC3728;LAKE Hazel over Farr Lateral Canal in Ada County, Idaho. It was built in 1992 and reconstructed in 2022, so it is 33 years old, younger 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 5,100 vehicles a day, roughly 2% of them trucks, projected to reach 7,650 by 2042. The structure is 48 ft (14.6 m) long and 77 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesSTC3728;LAKE Hazel
CrossesFarr Lateral Canal
Location3.8 N. 3.0 E. Kuna
RouteCounty Highway 3728
CountyAda County
StateIdaho
Coordinates43.5465, -116.36447
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 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 rating110.1 US tons
Inventory rating109 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length48 ft (14.6 m)
Longest span48 ft (14.6 m)
Deck width77 ft (23.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,100 (2023)
Projected traffic7,650 by 2042
Trucks2%
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

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 STC3728;LAKE Hazel over Farr Lateral Canal built?

It was built in 1992, making it 33 years old in 2025. It was reconstructed in 2022.

What condition is STC3728;LAKE Hazel over Farr Lateral 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 2023.

How much traffic does STC3728;LAKE Hazel over Farr Lateral Canal carry?

About 5,100 vehicles per day (2023 count), of which roughly 2% are trucks.

How long is STC3728;LAKE Hazel over Farr Lateral Canal?

The structure is 48 ft (14.6 m) long with a longest span of 48 ft (14.6 m) and a deck 77 ft wide.

Who owns STC3728;LAKE Hazel over Farr Lateral Canal?

It is owned by the County Highway Agency.