US Bridges

Stc 3790;ALLENDALE over Golden Gate Canal

Fair

Canyon County, Idaho · 0.6 S. 2.0 E. Wilder · Structure no. 000000000027216

Built
1992
33 years old
Condition
Fair
inspected November 2023
Type
Channel Beam
Concrete
Length
32 ft
2 main spans
Daily traffic
240
2023 count
Owner
Local
Other Local Agency

About this bridge

Stc 3790;ALLENDALE over Golden Gate Canal is a concrete channel beam carrying Stc 3790;ALLENDALE over Golden Gate Canal in Canyon County, Idaho. It was built in 1992, 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 240 vehicles a day, roughly 9% of them trucks, projected to reach 360 by 2042. The structure is 32 ft (9.8 m) long and 28 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesStc 3790;ALLENDALE
CrossesGolden Gate Canal
Location0.6 S. 2.0 E. Wilder
RouteCounty Highway 3790
CountyCanyon County
StateIdaho
Coordinates43.6665, -116.87175
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection9 ExcellentNo problems noted.
Last inspectionNovember 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 adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60 US tons
Inventory rating36 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length32 ft (9.8 m)
Longest span15 ft (4.6 m)
Deck width28 ft (8.5 m)
Roadway width26 ft (8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic240 (2023)
Projected traffic360 by 2042
Trucks9%
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

OwnerOther Local Agency
Maintained byOther Local 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 Stc 3790;ALLENDALE over Golden Gate Canal built?

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

What condition is Stc 3790;ALLENDALE over Golden Gate 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 2023.

How much traffic does Stc 3790;ALLENDALE over Golden Gate Canal carry?

About 240 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is Stc 3790;ALLENDALE over Golden Gate Canal?

The structure is 32 ft (9.8 m) long with a longest span of 15 ft (4.6 m) and a deck 28 ft wide.

Who owns Stc 3790;ALLENDALE over Golden Gate Canal?

It is owned by the Other Local Agency.