US Bridges

Al Cnty RD 513 over Little Laramie River

Fair

Albany County, Wyoming · 12 MI East of Centennial · Structure no. DNS

Built
1979
46 years old
Condition
Fair
inspected November 2023
Type
Tee Beam
Prestressed Concrete
Length
91 ft
3 main spans
Daily traffic
122
2024 count
Owner
County
County Highway Agency

About this bridge

Al Cnty RD 513 over Little Laramie River is a prestressed concrete tee beam carrying Al Cnty RD 513 over Little Laramie River in Albany County, Wyoming. It was built in 1979, so it is 46 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 122 vehicles a day, roughly 12% of them trucks, projected to reach 171 by 2043. The structure is 91 ft (27.7 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesAl Cnty RD 513
CrossesLittle Laramie River
Location12 MI East of Centennial
RouteCounty Highway 513
CountyAlbany County
StateWyoming
Coordinates41.34003, -105.95234
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionNovember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans3
Design loadHS 20
Structure length91 ft (27.7 m)
Longest span30 ft (9.1 m)
Deck width29 ft (8.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic122 (2024)
Projected traffic171 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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$13,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Al Cnty RD 513 over Little Laramie River built?

It was built in 1979, making it 46 years old in 2025.

What condition is Al Cnty RD 513 over Little 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 Al Cnty RD 513 over Little Laramie River carry?

About 122 vehicles per day (2024 count), of which roughly 12% are trucks.

How long is Al Cnty RD 513 over Little Laramie River?

The structure is 91 ft (27.7 m) long with a longest span of 30 ft (9.1 m) and a deck 29 ft wide.

Who owns Al Cnty RD 513 over Little Laramie River?

It is owned by the County Highway Agency.