US Bridges

LN Cnty RD 125 over Salt River

Fair

Lincoln County, Wyoming · 0.5 Miles W. of Thayne · Structure no. EQN

Built
1980
45 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
110 ft
3 main spans
Daily traffic
158
2024 count
Owner
County
County Highway Agency

About this bridge

LN Cnty RD 125 over Salt River is a steel continuous stringer/multi-beam or girder carrying LN Cnty RD 125 over Salt River in Lincoln 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 158 vehicles a day, roughly 7% of them trucks, projected to reach 221 by 2043. The structure is 110 ft (33.5 m) long and 31 ft wide. If it were closed, the detour would be 11.2 mi (18 km).

CarriesLN Cnty RD 125
CrossesSalt River
Location0.5 Miles W. of Thayne
RouteCounty Highway 125
StateWyoming
Coordinates42.92447, -111.01709
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.
Superstructure8 Very GoodNo problems noted.
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 inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.6 US tons
Inventory rating28.8 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length110 ft (33.5 m)
Longest span43 ft (13 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic158 (2024)
Projected traffic221 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 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$6,000
NavigationNo navigation control on waterway

Frequently asked questions

When was LN Cnty RD 125 over Salt River built?

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

What condition is LN Cnty RD 125 over Salt 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 July 2023.

How much traffic does LN Cnty RD 125 over Salt River carry?

About 158 vehicles per day (2024 count), of which roughly 7% are trucks.

How long is LN Cnty RD 125 over Salt River?

The structure is 110 ft (33.5 m) long with a longest span of 43 ft (13 m) and a deck 31 ft wide.

Who owns LN Cnty RD 125 over Salt River?

It is owned by the County Highway Agency.