US Bridges

LN Cnty RD 135 over Swift Creek

FairPosted for load

Lincoln County, Wyoming · 3 Miles N.W. of Afton · Structure no. EQI

Built
1965
60 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete Continuous
Length
29 ft
3 main spans
Daily traffic
333
2024 count
Owner
County
County Highway Agency

About this bridge

LN Cnty RD 135 over Swift Creek is a concrete continuous culvert carrying LN Cnty RD 135 over Swift Creek in Lincoln County, Wyoming. It was built in 1965, so it is 60 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. Its operating status is: posted for load restriction.

It carries about 333 vehicles a day, roughly 7% of them trucks, projected to reach 466 by 2043. The structure is 29 ft (8.9 m) long and 33 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesLN Cnty RD 135
CrossesSwift Creek
Location3 Miles N.W. of Afton
RouteCounty Highway 135
CountyLincoln County
StateWyoming
Coordinates42.73654, -110.95313
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
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.7 US tons
Inventory rating29.8 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length29 ft (8.9 m)
Longest span8 ft (2.4 m)
Deck width33 ft (10 m)
Roadway width31 ft (9.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic333 (2024)
Projected traffic466 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed6.2 mi (10 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$41,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LN Cnty RD 135 over Swift Creek built?

It was built in 1965, making it 60 years old in 2025.

What condition is LN Cnty RD 135 over Swift 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 July 2023.

How much traffic does LN Cnty RD 135 over Swift Creek carry?

About 333 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is LN Cnty RD 135 over Swift Creek?

The structure is 29 ft (8.9 m) long with a longest span of 8 ft (2.4 m) and a deck 33 ft wide.

Who owns LN Cnty RD 135 over Swift Creek?

It is owned by the County Highway Agency.