US Bridges

Pl Cnty RD 81 over Iowa Lateral Ditch

Fair

Platte County, Wyoming · 5.5 Mi. S.W. of Wheatland · Structure no. DQK

Built
1970
55 years old
Condition
Fair
inspected November 2024
Type
Tee Beam
Concrete
Length
25 ft
1 main span
Daily traffic
138
2024 count
Owner
County
County Highway Agency

About this bridge

Pl Cnty RD 81 over Iowa Lateral Ditch is a concrete tee beam carrying Pl Cnty RD 81 over Iowa Lateral Ditch in Platte County, Wyoming. It was built in 1970, so it is 55 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 138 vehicles a day, roughly 11% of them trucks, projected to reach 193 by 2043. The structure is 25 ft (7.6 m) long and 27 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPl Cnty RD 81
CrossesIowa Lateral Ditch
Location5.5 Mi. S.W. of Wheatland
RouteCounty Highway 81
CountyPlatte County
StateWyoming
Coordinates42.01699, -105.04551
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.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionNovember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than 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 rating52 US tons
Inventory rating38 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span23 ft (7 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic138 (2024)
Projected traffic193 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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$38,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pl Cnty RD 81 over Iowa Lateral Ditch built?

It was built in 1970, making it 55 years old in 2025.

What condition is Pl Cnty RD 81 over Iowa Lateral Ditch 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 November 2024.

How much traffic does Pl Cnty RD 81 over Iowa Lateral Ditch carry?

About 138 vehicles per day (2024 count), of which roughly 11% are trucks.

How long is Pl Cnty RD 81 over Iowa Lateral Ditch?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 27 ft wide.

Who owns Pl Cnty RD 81 over Iowa Lateral Ditch?

It is owned by the County Highway Agency.