US Bridges

Pa Cnty RD R22A over Alkali Creek

Fair

Park County, Wyoming · 8 Mi. W.Nw. of Ralston · Structure no. EGY

Built
1974
51 years old
Condition
Fair
inspected February 2024
Type
Tee Beam
Prestressed Concrete
Length
36 ft
1 main span
Daily traffic
625
2024 count
Owner
County
County Highway Agency

About this bridge

Pa Cnty RD R22A over Alkali Creek is a prestressed concrete tee beam carrying Pa Cnty RD R22A over Alkali Creek in Park County, Wyoming. It was built in 1974, so it is 51 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 625 vehicles a day, roughly 7% of them trucks, projected to reach 875 by 2043. The structure is 36 ft (11 m) long and 24 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

CarriesPa Cnty RD R22A
CrossesAlkali Creek
Location8 Mi. W.Nw. of Ralston
RouteCounty Highway 0R22A
StateWyoming
Coordinates44.75349, -109.01796
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length36 ft (11 m)
Longest span35 ft (10.7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic625 (2024)
Projected traffic875 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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$10,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pa Cnty RD R22A over Alkali Creek built?

It was built in 1974, making it 51 years old in 2025.

What condition is Pa Cnty RD R22A over Alkali 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 February 2024.

How much traffic does Pa Cnty RD R22A over Alkali Creek carry?

About 625 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is Pa Cnty RD R22A over Alkali Creek?

The structure is 36 ft (11 m) long with a longest span of 35 ft (10.7 m) and a deck 24 ft wide.

Who owns Pa Cnty RD R22A over Alkali Creek?

It is owned by the County Highway Agency.