US Bridges

Stc 6774;N 2400 E over Twin Groves Canal

GoodPosted for load

Fremont County, Idaho · 0.7 S. 0.2 E. St. Anthony · Structure no. 000000000021050

Built
1980
45 years old
Condition
Good
inspected November 2024
Type
Tee Beam
Prestressed Concrete
Length
27 ft
1 main span
Daily traffic
1,900
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 6774;N 2400 E over Twin Groves Canal is a prestressed concrete tee beam carrying Stc 6774;N 2400 E over Twin Groves Canal in Fremont County, Idaho. It was built in 1980, so it is 45 years old, younger than the Idaho average of 45.3 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. Its operating status is: posted for load restriction.

It carries about 1,900 vehicles a day, roughly 14% of them trucks, projected to reach 2,850 by 2042. The structure is 27 ft (8.2 m) long and 44 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesStc 6774;N 2400 E
CrossesTwin Groves Canal
Location0.7 S. 0.2 E. St. Anthony
RouteCounty Highway 6774
StateIdaho
Coordinates43.95086, -111.67794
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating38 US tons
Inventory rating23 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 15
Structure length27 ft (8.2 m)
Longest span26 ft (7.9 m)
Deck width44 ft (13.5 m)
Roadway width42 ft (12.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,900 (2023)
Projected traffic2,850 by 2042
Trucks14%
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 Stc 6774;N 2400 E over Twin Groves Canal built?

It was built in 1980, making it 45 years old in 2025.

What condition is Stc 6774;N 2400 E over Twin Groves Canal in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in November 2024.

How much traffic does Stc 6774;N 2400 E over Twin Groves Canal carry?

About 1,900 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is Stc 6774;N 2400 E over Twin Groves Canal?

The structure is 27 ft (8.2 m) long with a longest span of 26 ft (7.9 m) and a deck 44 ft wide.

Who owns Stc 6774;N 2400 E over Twin Groves Canal?

It is owned by the County Highway Agency.