US Bridges

Pa Cnty RD L10D over Heart Mountain Canal

Fair

Park County, Wyoming · 7.5 Mi. W. of Ralston · Structure no. EWG

Built
1977
48 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
53 ft
1 main span
Daily traffic
237
2024 count
Owner
County
County Highway Agency

About this bridge

Pa Cnty RD L10D over Heart Mountain Canal is a steel stringer/multi-beam or girder carrying Pa Cnty RD L10D over Heart Mountain Canal in Park County, Wyoming. It was built in 1977, so it is 48 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 237 vehicles a day, roughly 7% of them trucks, projected to reach 332 by 2043. The structure is 53 ft (16.2 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

Location

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CarriesPa Cnty RD L10D
CrossesHeart Mountain Canal
Location7.5 Mi. W. of Ralston
RouteCounty Highway 0L10D
CountyPark County
StateWyoming
Coordinates44.73851, -109.0271
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length53 ft (16.2 m)
Longest span51 ft (15.5 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic237 (2024)
Projected traffic332 by 2043
Trucks7%
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 proposedOther structural work, including hydraulic replacements
Estimated improvement cost$58,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa Cnty RD L10D over Heart Mountain Canal built?

It was built in 1977, making it 48 years old in 2025.

What condition is Pa Cnty RD L10D over Heart Mountain 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 February 2024.

How much traffic does Pa Cnty RD L10D over Heart Mountain Canal carry?

About 237 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Pa Cnty RD L10D over Heart Mountain Canal?

The structure is 53 ft (16.2 m) long with a longest span of 51 ft (15.5 m) and a deck 24 ft wide.

Who owns Pa Cnty RD L10D over Heart Mountain Canal?

It is owned by the County Highway Agency.