US Bridges

SW Cnty RD 85 over Unnamed Draw

Fair

Sweetwater County, Wyoming · 6 MI SE Little America · Structure no. FOY

Built
1980
45 years old
Condition
Fair
inspected August 2024
Type
Culvert
Concrete Continuous
Length
36 ft
4 main spans
Daily traffic
725
2024 count
Owner
County
County Highway Agency

About this bridge

SW Cnty RD 85 over Unnamed Draw is a concrete continuous culvert carrying SW Cnty RD 85 over Unnamed Draw in Sweetwater County, Wyoming. It was built in 1980, so it is 45 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 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 725 vehicles a day, roughly 8% of them trucks, projected to reach 1,015 by 2043. The structure is 36 ft (11 m) long. If it were closed, the detour would be 123.7 mi (199 km).

CarriesSW Cnty RD 85
CrossesUnnamed Draw
Location6 MI SE Little America
RouteCounty Highway 85
StateWyoming
Coordinates41.50288, -109.77367
Functional classRural Major 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
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadHS 20
Structure length36 ft (11 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic725 (2024)
Projected traffic1,015 by 2043
Trucks8%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed123.7 mi (199 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$4,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SW Cnty RD 85 over Unnamed Draw built?

It was built in 1980, making it 45 years old in 2025.

What condition is SW Cnty RD 85 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 August 2024.

How much traffic does SW Cnty RD 85 over Unnamed Draw carry?

About 725 vehicles per day (2024 count), of which roughly 8% are trucks.

How long is SW Cnty RD 85 over Unnamed Draw?

The structure is 36 ft (11 m) long with a longest span of 8 ft (2.4 m).

Who owns SW Cnty RD 85 over Unnamed Draw?

It is owned by the County Highway Agency.