US Bridges

LA Cnty RD 154-1 over Unnamed Draw

Fair

Laramie County, Wyoming · 10 Mi. N. of Egbert · Structure no. DOS

Built
1973
52 years old
Condition
Fair
inspected December 2024
Type
Tee Beam
Prestressed Concrete
Length
24 ft
1 main span
Daily traffic
284
2024 count
Owner
County
County Highway Agency

About this bridge

LA Cnty RD 154-1 over Unnamed Draw is a prestressed concrete tee beam carrying LA Cnty RD 154-1 over Unnamed Draw in Laramie County, Wyoming. It was built in 1973, so it is 52 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 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 284 vehicles a day, roughly 20% of them trucks, projected to reach 398 by 2043. The structure is 24 ft (7.3 m) long and 24 ft wide. If it were closed, the detour would be 8.1 mi (13 km).

CarriesLA Cnty RD 154-1
CrossesUnnamed Draw
Location10 Mi. N. of Egbert
RouteCounty Highway 154-1
StateWyoming
Coordinates41.30302, -104.25342
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.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.1 US tons
Inventory rating36 US tons

Structure

Structure typeTee Beam
MaterialPrestressed Concrete
DeckConcrete, precast panels
Main spans1
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span23 ft (7 m)
Deck width24 ft (7.3 m)
Roadway width24 ft (7.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic284 (2024)
Projected traffic398 by 2043
Trucks20%
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$36,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LA Cnty RD 154-1 over Unnamed Draw built?

It was built in 1973, making it 52 years old in 2025.

What condition is LA Cnty RD 154-1 over Unnamed Draw 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 December 2024.

How much traffic does LA Cnty RD 154-1 over Unnamed Draw carry?

About 284 vehicles per day (2024 count), of which roughly 20% are trucks.

How long is LA Cnty RD 154-1 over Unnamed Draw?

The structure is 24 ft (7.3 m) long with a longest span of 23 ft (7 m) and a deck 24 ft wide.

Who owns LA Cnty RD 154-1 over Unnamed Draw?

It is owned by the County Highway Agency.