US Bridges

Ui Cnty RD 261 over Blacks Fork River

FairPosted for load

Uinta County, Wyoming · 2 Mi. W. NW of Robertson · Structure no. FCV

Built
1984
41 years old
Condition
Fair
inspected June 2024
Type
Other
Steel
Length
54 ft
1 main span
Daily traffic
73
2024 count
Owner
County
County Highway Agency

About this bridge

Ui Cnty RD 261 over Blacks Fork River is a steel other carrying Ui Cnty RD 261 over Blacks Fork River in Uinta County, Wyoming. It was built in 1984, so it is 41 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. Its operating status is: posted for load restriction.

It carries about 73 vehicles a day, roughly 15% of them trucks, projected to reach 102 by 2043. The structure is 54 ft (16.5 m) long and 22 ft wide. If it were closed, the detour would be 16.2 mi (26 km).

Location

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CarriesUi Cnty RD 261
CrossesBlacks Fork River
Location2 Mi. W. NW of Robertson
RouteCounty Highway 261
CountyUinta County
StateWyoming
Coordinates41.20109, -110.4505
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 inspectionJune 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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating5.4 US tons
Inventory rating3.2 US tons

Structure

Structure typeOther
MaterialSteel
DeckCorrugated steel
Main spans1
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span47 ft (14.3 m)
Deck width22 ft (6.7 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic73 (2024)
Projected traffic102 by 2043
Trucks15%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.2 mi (26 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$330,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ui Cnty RD 261 over Blacks Fork River built?

It was built in 1984, making it 41 years old in 2025.

What condition is Ui Cnty RD 261 over Blacks Fork 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 June 2024.

How much traffic does Ui Cnty RD 261 over Blacks Fork River carry?

About 73 vehicles per day (2024 count), of which roughly 15% are trucks.

How long is Ui Cnty RD 261 over Blacks Fork River?

The structure is 54 ft (16.5 m) long with a longest span of 47 ft (14.3 m) and a deck 22 ft wide.

Who owns Ui Cnty RD 261 over Blacks Fork River?

It is owned by the County Highway Agency.