US Bridges

LN Cnty RD 136 over Salt Creek

Poor

Lincoln County, Wyoming · 4 Miles NW of Afton · Structure no. MBZ

Built
2008
17 years old
Condition
Poor
inspected February 2025
Type
Culvert
Steel
Length
20 ft
1 main span
Daily traffic
40
2024 count
Owner
County
County Highway Agency

About this bridge

LN Cnty RD 136 over Salt Creek is a steel culvert carrying LN Cnty RD 136 over Salt Creek in Lincoln County, Wyoming. It was built in 2008, so it is 17 years old, younger than the Wyoming average of 48.4 years.

The most recent inspection reported to the Federal Highway Administration rates it in poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 40 vehicles a day, roughly 3% of them trucks, projected to reach 56 by 2043. The structure is 20 ft (6.1 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesLN Cnty RD 136
CrossesSalt Creek
Location4 Miles NW of Afton
RouteCounty Highway 136
StateWyoming
Coordinates42.75698, -110.9715
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionFebruary 2025
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation4: 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 rating51.1 US tons
Inventory rating30.6 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length20 ft (6.1 m)
Longest span20 ft (6.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40 (2024)
Projected traffic56 by 2043
Trucks3%
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 statusNot eligible for the National Register of Historic Places
Work proposedOther structural work, including hydraulic replacements
Estimated improvement cost$35,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LN Cnty RD 136 over Salt Creek built?

It was built in 2008, making it 17 years old in 2025.

What condition is LN Cnty RD 136 over Salt Creek in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in February 2025.

How much traffic does LN Cnty RD 136 over Salt Creek carry?

About 40 vehicles per day (2024 count), of which roughly 3% are trucks.

How long is LN Cnty RD 136 over Salt Creek?

The structure is 20 ft (6.1 m) long with a longest span of 20 ft (6.1 m).

Who owns LN Cnty RD 136 over Salt Creek?

It is owned by the County Highway Agency.