US Bridges

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

Fair

Morgan County, Utah · Peterson Interchange · Structure no. 4F 29

Built
1964
61 years old
Condition
Fair
inspected July 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
114 ft
3 main spans
Daily traffic
11,990
2014 count
Owner
State
State Highway Agency

About this bridge

I-84 (SR-84) Wbl over Co.Rd. Intchg. X-Road is a prestressed concrete stringer/multi-beam or girder carrying I-84 (SR-84) Wbl over Co.Rd. Intchg. X-Road in Morgan County, Utah. It was built in 1964, so it is 61 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 11,990 vehicles a day, roughly 42% of them trucks, projected to reach 14,988 by 2034. The structure is 114 ft (34.8 m) long and 41 ft wide.

Location

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CarriesI-84 (SR-84) Wbl
CrossesCo.Rd. Intchg. X-Road
LocationPeterson Interchange
RouteInterstate 84
CountyMorgan County
StateUtah
Coordinates41.11528, -111.76361
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
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.
Substructure5 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
ScourBridge not over waterway
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating53.6 US tons
Inventory rating42.9 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20 + Mod
Structure length114 ft (34.8 m)
Longest span37 ft (11.4 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,990 (2014)
Projected traffic14,988 by 2034
Trucks42%
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 Co.Rd. Intchg. X-Road built?

It was built in 1964, making it 61 years old in 2025.

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

About 11,990 vehicles per day (2014 count), of which roughly 42% are trucks.

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

The structure is 114 ft (34.8 m) long with a longest span of 37 ft (11.4 m) and a deck 41 ft wide.

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

It is owned by the State Highway Agency.