US Bridges

SB Cnty RD 125 over Boulder Canal

Fair

Sublette County, Wyoming · 3 Miles N.E. of Boulder · Structure no. KIT

Built
1995
30 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Steel
Length
25 ft
1 main span
Daily traffic
146
2024 count
Owner
County
County Highway Agency

About this bridge

SB Cnty RD 125 over Boulder Canal is a steel stringer/multi-beam or girder carrying SB Cnty RD 125 over Boulder Canal in Sublette County, Wyoming. It was built in 1995, so it is 30 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 146 vehicles a day, roughly 39% of them trucks, projected to reach 204 by 2043. The structure is 25 ft (7.6 m) long and 23 ft wide. If it were closed, the detour would be 44.7 mi (72 km).

Location

Open in Google Maps
CarriesSB Cnty RD 125
CrossesBoulder Canal
Location3 Miles N.E. of Boulder
RouteCounty Highway 727
CountySublette County
StateWyoming
Coordinates42.76491, -109.67542
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating48 US tons
Inventory rating35.1 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span23 ft (7 m)
Deck width23 ft (7 m)
Roadway width23 ft (7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic146 (2024)
Projected traffic204 by 2043
Trucks39%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed44.7 mi (72 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$36,000
NavigationNo navigation control on waterway

Frequently asked questions

When was SB Cnty RD 125 over Boulder Canal built?

It was built in 1995, making it 30 years old in 2025.

What condition is SB Cnty RD 125 over Boulder Canal 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 February 2024.

How much traffic does SB Cnty RD 125 over Boulder Canal carry?

About 146 vehicles per day (2024 count), of which roughly 39% are trucks.

How long is SB Cnty RD 125 over Boulder Canal?

The structure is 25 ft (7.6 m) long with a longest span of 23 ft (7 m) and a deck 23 ft wide.

Who owns SB Cnty RD 125 over Boulder Canal?

It is owned by the County Highway Agency.