US Bridges

Grassy Lake Road over Polecat Creek

Fair

Teton County, Wyoming · N. on 89 Turn Left Into F · Structure no. 1460017P0000000

Built
1975
50 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
73 ft
2 main spans
Daily traffic
100
2013 count
Owner
Federal
National Park Service

About this bridge

Grassy Lake Road over Polecat Creek is a wood or timber stringer/multi-beam or girder carrying Grassy Lake Road over Polecat Creek in Teton County, Wyoming. It was built in 1975, so it is 50 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 5 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 100 vehicles a day, roughly 1% of them trucks, projected to reach 300 by 2033. The structure is 73 ft (22.3 m) long and 27 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesGrassy Lake Road
CrossesPolecat Creek
LocationN. on 89 Turn Left Into F
RouteU.S. Route 1460
CountyTeton County
StateWyoming
Coordinates44.10907, -110.68455
Functional classRural Local

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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating37 US tons
Inventory rating25 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadUnknown
Structure length73 ft (22.3 m)
Longest span36 ft (11 m)
Deck width27 ft (8.3 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2013)
Projected traffic300 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 SystemNo

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$38,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Grassy Lake Road over Polecat Creek built?

It was built in 1975, making it 50 years old in 2025.

What condition is Grassy Lake Road over Polecat 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 September 2023.

How much traffic does Grassy Lake Road over Polecat Creek carry?

About 100 vehicles per day (2013 count), of which roughly 1% are trucks.

How long is Grassy Lake Road over Polecat Creek?

The structure is 73 ft (22.3 m) long with a longest span of 36 ft (11 m) and a deck 27 ft wide.

Who owns Grassy Lake Road over Polecat Creek?

It is owned by the National Park Service.