US Bridges

STC7408;W 12th ST over Farmers Coop Canal

Fair

Gem County, Idaho · In Emmett; W. 12th ST · Structure no. 000000000028065

Built
1965
60 years old
Condition
Fair
inspected March 2023
Type
Tee Beam
Prestressed Concrete
Length
26 ft
1 main span
Daily traffic
1,400
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

STC7408;W 12th ST over Farmers Coop Canal is a prestressed concrete tee beam carrying STC7408;W 12th ST over Farmers Coop Canal in Gem County, Idaho. It was built in 1965, so it is 60 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 5 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 1,400 vehicles a day, roughly 7% of them trucks, projected to reach 2,100 by 2042. The structure is 26 ft (7.9 m) long and 36 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSTC7408;W 12th ST
CrossesFarmers Coop Canal
LocationIn Emmett; W. 12th ST
RouteCity Street 7408
CountyGem County
StateIdaho
Coordinates43.86467, -116.50303
Functional classRural Major Collector

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 rating53.6 US tons
Inventory rating38.7 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length26 ft (7.9 m)
Longest span25 ft (7.6 m)
Deck width36 ft (11 m)
Roadway width30 ft (9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,400 (2023)
Projected traffic2,100 by 2042
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 STC7408;W 12th ST over Farmers Coop Canal built?

It was built in 1965, making it 60 years old in 2025.

What condition is STC7408;W 12th ST over Farmers Coop 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 STC7408;W 12th ST over Farmers Coop Canal carry?

About 1,400 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is STC7408;W 12th ST over Farmers Coop Canal?

The structure is 26 ft (7.9 m) long with a longest span of 25 ft (7.6 m) and a deck 36 ft wide.

Who owns STC7408;W 12th ST over Farmers Coop Canal?

It is owned by the City or Municipal Highway Agency.