US Bridges

Ui Cnty RD 233 over Blacks Fork River

Fair

Uinta County, Wyoming · 11 Mi. N.E. of Lyman · Structure no. ESS

Built
1931
94 years old
Condition
Fair
inspected January 2024
Type
Truss - Thru
Steel
Length
162 ft
1 main span
Daily traffic
42
2024 count
Owner
County
County Highway Agency

About this bridge

Ui Cnty RD 233 over Blacks Fork River is a steel truss - thru carrying Ui Cnty RD 233 over Blacks Fork River in Uinta County, Wyoming. It was built in 1931, so it is 94 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 5 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 42 vehicles a day, roughly 14% of them trucks, projected to reach 59 by 2043. The structure is 162 ft (49.4 m) long and 21 ft wide. If it were closed, the detour would be 47.8 mi (77 km).

Location

Open in Google Maps
CarriesUi Cnty RD 233
CrossesBlacks Fork River
Location11 Mi. N.E. of Lyman
RouteCounty Highway 233
CountyUinta County
StateWyoming
Coordinates41.45203, -110.17247
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.7 US tons
Inventory rating30.8 US tons

Structure

Structure typeTruss - Thru
MaterialSteel
DeckConcrete, cast-in-place
Main spans1 (+2 approach)
Design loadH 15
Structure length162 ft (49.4 m)
Longest span100 ft (30.5 m)
Deck width21 ft (6.5 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic42 (2024)
Projected traffic59 by 2043
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed47.8 mi (77 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$171,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Ui Cnty RD 233 over Blacks Fork River built?

It was built in 1931, making it 94 years old in 2025.

What condition is Ui Cnty RD 233 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 January 2024.

How much traffic does Ui Cnty RD 233 over Blacks Fork River carry?

About 42 vehicles per day (2024 count), of which roughly 14% are trucks.

How long is Ui Cnty RD 233 over Blacks Fork River?

The structure is 162 ft (49.4 m) long with a longest span of 100 ft (30.5 m) and a deck 21 ft wide.

Who owns Ui Cnty RD 233 over Blacks Fork River?

It is owned by the County Highway Agency.