US Bridges

STC6770;SALEM RD over Henrys Fork Snake River

Good

Fremont County, Idaho · 2.1 S 1.0 W Parker · Structure no. 000000000020996

Built
2007
18 years old
Condition
Good
inspected April 2022
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
246 ft
2 main spans
Daily traffic
2,600
2023 count
Owner
County
County Highway Agency

About this bridge

STC6770;SALEM RD over Henrys Fork Snake River is a prestressed concrete stringer/multi-beam or girder carrying STC6770;SALEM RD over Henrys Fork Snake River in Fremont County, Idaho. It was built in 2007, so it is 18 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 2,600 vehicles a day, roughly 10% of them trucks, projected to reach 3,900 by 2042. The structure is 246 ft (75 m) long and 41 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesSTC6770;SALEM RD
CrossesHenrys Fork Snake River
Location2.1 S 1.0 W Parker
RouteCounty Highway 6770
CountyFremont County
StateIdaho
Coordinates43.927, -111.77789
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating96 US tons
Inventory rating58 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length246 ft (75 m)
Longest span102 ft (31.1 m)
Deck width41 ft (12.6 m)
Roadway width39 ft (11.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,600 (2023)
Projected traffic3,900 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 STC6770;SALEM RD over Henrys Fork Snake River built?

It was built in 2007, making it 18 years old in 2025.

What condition is STC6770;SALEM RD over Henrys Fork Snake 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 April 2022.

How much traffic does STC6770;SALEM RD over Henrys Fork Snake River carry?

About 2,600 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is STC6770;SALEM RD over Henrys Fork Snake River?

The structure is 246 ft (75 m) long with a longest span of 102 ft (31.1 m) and a deck 41 ft wide.

Who owns STC6770;SALEM RD over Henrys Fork Snake River?

It is owned by the County Highway Agency.