US Bridges

Pl Cnty RD 133 over Laramie River

Fair

Platte County, Wyoming · 8 Mi. N.W. of Wheatland · Structure no. FIM

Built
1989
36 years old
Condition
Fair
inspected November 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
130 ft
3 main spans
Daily traffic
48
2024 count
Owner
County
County Highway Agency

About this bridge

Pl Cnty RD 133 over Laramie River is a steel continuous stringer/multi-beam or girder carrying Pl Cnty RD 133 over Laramie River in Platte County, Wyoming. It was built in 1989, so it is 36 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 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 48 vehicles a day, roughly 44% of them trucks, projected to reach 67 by 2043. The structure is 130 ft (39.6 m) long and 31 ft wide. If it were closed, the detour would be 34.8 mi (56 km).

Location

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CarriesPl Cnty RD 133
CrossesLaramie River
Location8 Mi. N.W. of Wheatland
RouteCounty Highway 133
CountyPlatte County
StateWyoming
Coordinates42.1036, -105.09424
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length130 ft (39.6 m)
Longest span50 ft (15.2 m)
Deck width31 ft (9.4 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48 (2024)
Projected traffic67 by 2043
Trucks44%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed34.8 mi (56 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$9,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Pl Cnty RD 133 over Laramie River built?

It was built in 1989, making it 36 years old in 2025.

What condition is Pl Cnty RD 133 over Laramie River 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 2023.

How much traffic does Pl Cnty RD 133 over Laramie River carry?

About 48 vehicles per day (2024 count), of which roughly 44% are trucks.

How long is Pl Cnty RD 133 over Laramie River?

The structure is 130 ft (39.6 m) long with a longest span of 50 ft (15.2 m) and a deck 31 ft wide.

Who owns Pl Cnty RD 133 over Laramie River?

It is owned by the County Highway Agency.