US Bridges

Stc 6768;N 4700 E over Harrison Canal

Good

Jefferson County, Idaho · 0.5 E. 1.2 N. Ririe · Structure no. 000000000020950

Built
1982
43 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
42 ft
1 main span
Daily traffic
1,600
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 6768;N 4700 E over Harrison Canal is a prestressed concrete stringer/multi-beam or girder carrying Stc 6768;N 4700 E over Harrison Canal in Jefferson County, Idaho. It was built in 1982, so it is 43 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.

It carries about 1,600 vehicles a day, roughly 8% of them trucks, projected to reach 2,400 by 2042. The structure is 42 ft (12.8 m) long and 40 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesStc 6768;N 4700 E
CrossesHarrison Canal
Location0.5 E. 1.2 N. Ririe
RouteCounty Highway 6768
StateIdaho
Coordinates43.64414, -111.76539
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 protection8 Very GoodNo problems noted.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating83 US tons
Inventory rating42 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length42 ft (12.8 m)
Longest span41 ft (12.5 m)
Deck width40 ft (12.2 m)
Roadway width37 ft (11.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,600 (2023)
Projected traffic2,400 by 2042
Trucks8%
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 6768;N 4700 E over Harrison Canal built?

It was built in 1982, making it 43 years old in 2025.

What condition is Stc 6768;N 4700 E over Harrison 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 March 2024.

How much traffic does Stc 6768;N 4700 E over Harrison Canal carry?

About 1,600 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Stc 6768;N 4700 E over Harrison Canal?

The structure is 42 ft (12.8 m) long with a longest span of 41 ft (12.5 m) and a deck 40 ft wide.

Who owns Stc 6768;N 4700 E over Harrison Canal?

It is owned by the County Highway Agency.