US Bridges

Stc 6774;TETON HWY over N.Fk.Teton River

Good

Fremont County, Idaho · 0.7 N. Teton · Structure no. 000000000021040

Built
1977
48 years old
Condition
Good
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
87 ft
1 main span
Daily traffic
1,100
2023 count
Owner
County
County Highway Agency

About this bridge

Stc 6774;TETON HWY over N.Fk.Teton River is a prestressed concrete stringer/multi-beam or girder carrying Stc 6774;TETON HWY over N.Fk.Teton River in Fremont County, Idaho. It was built in 1977, so it is 48 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 1,100 vehicles a day, roughly 31% of them trucks, projected to reach 1,650 by 2042. The structure is 87 ft (26.5 m) long and 38 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesStc 6774;TETON HWY
CrossesN.Fk.Teton River
Location0.7 N. Teton
RouteCounty Highway 6774
CountyFremont County
StateIdaho
Coordinates43.89786, -111.67808
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 inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to 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 rating50 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length87 ft (26.5 m)
Longest span85 ft (25.9 m)
Deck width38 ft (11.5 m)
Roadway width35 ft (10.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,100 (2023)
Projected traffic1,650 by 2042
Trucks31%
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;TETON HWY over N.Fk.Teton River built?

It was built in 1977, making it 48 years old in 2025.

What condition is Stc 6774;TETON HWY over N.Fk.Teton River 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 October 2023.

How much traffic does Stc 6774;TETON HWY over N.Fk.Teton River carry?

About 1,100 vehicles per day (2023 count), of which roughly 31% are trucks.

How long is Stc 6774;TETON HWY over N.Fk.Teton River?

The structure is 87 ft (26.5 m) long with a longest span of 85 ft (25.9 m) and a deck 38 ft wide.

Who owns Stc 6774;TETON HWY over N.Fk.Teton River?

It is owned by the County Highway Agency.