US Bridges

SR-66 over East Canyon Creek

Fair

Morgan County, Utah · Within Porterville · Structure no. 0D 377

Built
1934
91 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete
Length
32 ft
1 main span
Daily traffic
1,373
2021 count
Owner
State
State Highway Agency

About this bridge

SR-66 over East Canyon Creek is a concrete tee beam carrying SR-66 over East Canyon Creek in Morgan County, Utah. It was built in 1934, so it is 91 years old, older than the Utah average of 40.1 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 1,373 vehicles a day, roughly 49% of them trucks, projected to reach 1,648 by 2041. The structure is 32 ft (9.8 m) long and 27 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSR-66
CrossesEast Canyon Creek
LocationWithin Porterville
RouteState Highway 66
CountyMorgan County
StateUtah
Coordinates40.98172, -111.67836
Functional classRural Major 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
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 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; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating42.9 US tons
Inventory rating31.1 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadH 15
Structure length32 ft (9.8 m)
Longest span30 ft (9.1 m)
Deck width27 ft (8.1 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,373 (2021)
Projected traffic1,648 by 2041
Trucks49%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusHistorical significance not determinable at this time
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR-66 over East Canyon Creek built?

It was built in 1934, making it 91 years old in 2025.

What condition is SR-66 over East Canyon Creek 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 SR-66 over East Canyon Creek carry?

About 1,373 vehicles per day (2021 count), of which roughly 49% are trucks.

How long is SR-66 over East Canyon Creek?

The structure is 32 ft (9.8 m) long with a longest span of 30 ft (9.1 m) and a deck 27 ft wide.

Who owns SR-66 over East Canyon Creek?

It is owned by the State Highway Agency.