US Bridges

Pa Cnty RD 4DT over Sunshine Supply Canal

Fair

Park County, Wyoming · 14 Miles SW of Meeteetse · Structure no. DDQ

Built
1973
52 years old
Condition
Fair
inspected March 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
36 ft
3 main spans
Daily traffic
178
2024 count
Owner
County
County Highway Agency

About this bridge

Pa Cnty RD 4DT over Sunshine Supply Canal is a steel continuous stringer/multi-beam or girder carrying Pa Cnty RD 4DT over Sunshine Supply Canal in Park County, Wyoming. It was built in 1973, so it is 52 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 178 vehicles a day, roughly 31% of them trucks, projected to reach 249 by 2043. The structure is 36 ft (11.1 m) long and 32 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Location

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CarriesPa Cnty RD 4DT
CrossesSunshine Supply Canal
Location14 Miles SW of Meeteetse
RouteCounty Highway 4DT
CountyPark County
StateWyoming
Coordinates44.01204, -109.01742
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68.5 US tons
Inventory rating59.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 15
Structure length36 ft (11.1 m)
Longest span28 ft (8.5 m)
Deck width32 ft (9.8 m)
Roadway width29 ft (8.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic178 (2024)
Projected traffic249 by 2043
Trucks31%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$40,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa Cnty RD 4DT over Sunshine Supply Canal built?

It was built in 1973, making it 52 years old in 2025.

What condition is Pa Cnty RD 4DT over Sunshine Supply Canal 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 March 2023.

How much traffic does Pa Cnty RD 4DT over Sunshine Supply Canal carry?

About 178 vehicles per day (2024 count), of which roughly 31% are trucks.

How long is Pa Cnty RD 4DT over Sunshine Supply Canal?

The structure is 36 ft (11.1 m) long with a longest span of 28 ft (8.5 m) and a deck 32 ft wide.

Who owns Pa Cnty RD 4DT over Sunshine Supply Canal?

It is owned by the County Highway Agency.