US Bridges

Cb Cnty RD 353 over N Fork Encampment River

FairPosted for load

Carbon County, Wyoming · 1 Mi. S.W. of Encampment · Structure no. FCA

Built
1960
65 years old
Condition
Fair
inspected August 2024
Type
Girder and Floorbeam System
Steel
Length
60 ft
1 main span
Daily traffic
97
2024 count
Owner
County
County Highway Agency

About this bridge

Cb Cnty RD 353 over N Fork Encampment River is a steel girder and floorbeam system carrying Cb Cnty RD 353 over N Fork Encampment River in Carbon County, Wyoming. It was built in 1960, so it is 65 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 6 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 97 vehicles a day, roughly 4% of them trucks, projected to reach 136 by 2043. The structure is 60 ft (18.3 m) long and 18 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesCb Cnty RD 353
CrossesN Fork Encampment River
Location1 Mi. S.W. of Encampment
RouteCounty Highway 353
StateWyoming
Coordinates41.1974, -106.80251
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2024
Inspection intervalevery 12 months
Operating statusPosted for load restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation2: Basically intolerable, requiring high priority of replacement
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating11.2 US tons
Inventory rating6.8 US tons

Structure

MaterialSteel
DeckCorrugated steel
Main spans1
Design loadUnknown
Structure length60 ft (18.3 m)
Longest span59 ft (18 m)
Deck width18 ft (5.5 m)
Roadway width18 ft (5.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic97 (2024)
Projected traffic136 by 2043
Trucks4%
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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$357,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Cb Cnty RD 353 over N Fork Encampment River built?

It was built in 1960, making it 65 years old in 2025.

What condition is Cb Cnty RD 353 over N Fork Encampment 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 August 2024.

How much traffic does Cb Cnty RD 353 over N Fork Encampment River carry?

About 97 vehicles per day (2024 count), of which roughly 4% are trucks.

How long is Cb Cnty RD 353 over N Fork Encampment River?

The structure is 60 ft (18.3 m) long with a longest span of 59 ft (18 m) and a deck 18 ft wide.

Who owns Cb Cnty RD 353 over N Fork Encampment River?

It is owned by the County Highway Agency.