US Bridges

Stc 6711;N 35th W over Great Western Canal

Good

Bonneville County, Idaho · 1.5 N. 3.2 W. Idaho Falls · Structure no. 000000000020805

Built
1979
46 years old
Condition
Good
inspected April 2024
Type
Frame
Concrete
Length
25 ft
1 main span
Daily traffic
1,000
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 6711;N 35th W over Great Western Canal is a concrete frame carrying Stc 6711;N 35th W over Great Western Canal in Bonneville County, Idaho. It was built in 1979, so it is 46 years old, older 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.

It carries about 1,000 vehicles a day, roughly 4% of them trucks, projected to reach 1,500 by 2042. The structure is 25 ft (7.6 m) long and 51 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesStc 6711;N 35th W
CrossesGreat Western Canal
Location1.5 N. 3.2 W. Idaho Falls
RouteCounty Highway 6711
StateIdaho
Coordinates43.51258, -112.10289
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52 US tons
Inventory rating31 US tons

Structure

Structure typeFrame
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span25 ft (7.6 m)
Deck width51 ft (15.4 m)
Roadway width48 ft (14.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2023)
Projected traffic1,500 by 2042
Trucks4%
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 6711;N 35th W over Great Western Canal built?

It was built in 1979, making it 46 years old in 2025.

What condition is Stc 6711;N 35th W over Great Western 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 April 2024.

How much traffic does Stc 6711;N 35th W over Great Western Canal carry?

About 1,000 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is Stc 6711;N 35th W over Great Western Canal?

The structure is 25 ft (7.6 m) long with a longest span of 25 ft (7.6 m) and a deck 51 ft wide.

Who owns Stc 6711;N 35th W over Great Western Canal?

It is owned by the County Highway Agency.