US Bridges

I-84 (SR-84) Wbl over SR-66 Intchg. X-Road

Fair

Morgan County, Utah · West Morgan Interchange · Structure no. 4D 662

Built
1962
63 years old
Condition
Fair
inspected July 2023
Type
Tee Beam
Concrete Continuous
Length
127 ft
3 main spans
Daily traffic
16,214
2023 count
Owner
State
State Highway Agency

About this bridge

I-84 (SR-84) Wbl over SR-66 Intchg. X-Road is a concrete continuous tee beam carrying I-84 (SR-84) Wbl over SR-66 Intchg. X-Road in Morgan County, Utah. It was built in 1962, so it is 63 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 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 16,214 vehicles a day, roughly 41% of them trucks, projected to reach 19,457 by 2043. The structure is 127 ft (38.7 m) long and 41 ft wide.

Location

Open in Google Maps
CarriesI-84 (SR-84) Wbl
CrossesSR-66 Intchg. X-Road
LocationWest Morgan Interchange
RouteInterstate 84
CountyMorgan County
StateUtah
Coordinates41.04674, -111.67418
Functional classRural Principal Arterial - Interstate

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating43.2 US tons
Inventory rating28.5 US tons

Structure

Structure typeTee Beam
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length127 ft (38.7 m)
Longest span42 ft (12.8 m)
Deck width41 ft (12.4 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic16,214 (2023)
Projected traffic19,457 by 2043
Trucks41%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was I-84 (SR-84) Wbl over SR-66 Intchg. X-Road built?

It was built in 1962, making it 63 years old in 2025.

What condition is I-84 (SR-84) Wbl over SR-66 Intchg. X-Road 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 I-84 (SR-84) Wbl over SR-66 Intchg. X-Road carry?

About 16,214 vehicles per day (2023 count), of which roughly 41% are trucks.

How long is I-84 (SR-84) Wbl over SR-66 Intchg. X-Road?

The structure is 127 ft (38.7 m) long with a longest span of 42 ft (12.8 m) and a deck 41 ft wide.

Who owns I-84 (SR-84) Wbl over SR-66 Intchg. X-Road?

It is owned by the State Highway Agency.