US Bridges

High School Road over Flat Creek

Fair

Teton County, Wyoming · 1 Mile S. of Jackson · Structure no. EAM

Built
1983
42 years old
Condition
Fair
inspected August 2024
Type
Tee Beam
Prestressed Concrete
Length
60 ft
1 main span
Daily traffic
4,202
2024 count
Owner
Town / Township
Town or Township Highway Agency

About this bridge

High School Road over Flat Creek is a prestressed concrete tee beam carrying High School Road over Flat Creek in Teton County, Wyoming. It was built in 1983, so it is 42 years old, younger 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 4,202 vehicles a day, roughly 9% of them trucks, projected to reach 5,883 by 2043. The structure is 60 ft (18.3 m) long and 61 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesHigh School Road
CrossesFlat Creek
Location1 Mile S. of Jackson
RouteCity Street 215-3
CountyTeton County
StateWyoming
Coordinates43.45828, -110.79728
Functional classUrban Minor Arterial

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.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating39 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length60 ft (18.3 m)
Longest span58 ft (17.7 m)
Deck width61 ft (18.7 m)
Roadway width43 ft (13.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,202 (2024)
Projected traffic5,883 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerTown or Township Highway Agency
Maintained byTown or Township Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$17,000
NavigationNo navigation control on waterway

Frequently asked questions

When was High School Road over Flat Creek built?

It was built in 1983, making it 42 years old in 2025.

What condition is High School Road over Flat Creek 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 August 2024.

How much traffic does High School Road over Flat Creek carry?

About 4,202 vehicles per day (2024 count), of which roughly 9% are trucks.

How long is High School Road over Flat Creek?

The structure is 60 ft (18.3 m) long with a longest span of 58 ft (17.7 m) and a deck 61 ft wide.

Who owns High School Road over Flat Creek?

It is owned by the Town or Township Highway Agency.