US Bridges

U.S. Route 89 over Snake River

Fair

Teton County, Wyoming · 2 Miles South of North En · Structure no. 1460010P0000000

Built
1950
75 years old, rebuilt 2009
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
180 ft
3 main spans
Daily traffic
5,000
2013 count
Owner
Federal
National Park Service

About this bridge

U.S. Route 89 over Snake River is a steel continuous stringer/multi-beam or girder carrying U.S. Route 89 over Snake River in Teton County, Wyoming. It was built in 1950 and reconstructed in 2009, so it is 75 years old, older than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 5,000 vehicles a day, roughly 1% of them trucks, projected to reach 7,500 by 2033. The structure is 180 ft (54.9 m) long and 36 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

CarriesU.S. Route 89
CrossesSnake River
Location2 Miles South of North En
RouteFederal Lands Road 13
StateWyoming
Coordinates44.09941, -110.66751
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81 US tons
Inventory rating48 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length180 ft (54.9 m)
Longest span70 ft (21.3 m)
Deck width36 ft (10.9 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,000 (2013)
Projected traffic7,500 by 2033
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerNational Park Service
Maintained byNational Park Service
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost$47,000
NavigationNo navigation control on waterway

Frequently asked questions

When was U.S. Route 89 over Snake River built?

It was built in 1950, making it 75 years old in 2025. It was reconstructed in 2009.

What condition is U.S. Route 89 over Snake River in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in September 2023.

How much traffic does U.S. Route 89 over Snake River carry?

About 5,000 vehicles per day (2013 count), of which roughly 1% are trucks.

How long is U.S. Route 89 over Snake River?

The structure is 180 ft (54.9 m) long with a longest span of 70 ft (21.3 m) and a deck 36 ft wide.

Who owns U.S. Route 89 over Snake River?

It is owned by the National Park Service.