US Bridges

US-89NB Off-Ramp over Nb.Frontage Road

Fair

Davis County, Utah · Cherry Hills Intchg. · Structure no. 1F 692

Built
2004
21 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
321 ft
2 main spans
Daily traffic
3,534
2022 count
Owner
State
State Highway Agency

About this bridge

US-89NB Off-Ramp over Nb.Frontage Road is a prestressed concrete continuous stringer/multi-beam or girder carrying US-89NB Off-Ramp over Nb.Frontage Road in Davis County, Utah. It was built in 2004, so it is 21 years old, younger 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 3,534 vehicles a day, roughly 18% of them trucks, projected to reach 4,241 by 2042. The structure is 321 ft (97.9 m) long and 48 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesUS-89NB Off-Ramp
CrossesNb.Frontage Road
LocationCherry Hills Intchg.
RouteU.S. Route 89
CountyDavis County
StateUtah
Coordinates41.00889, -111.91139
Functional classRural Principal Arterial - Other

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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 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 geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating65.4 US tons
Inventory rating22.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 25 or greater
Structure length321 ft (97.9 m)
Longest span157 ft (48 m)
Deck width48 ft (14.5 m)
Roadway width45 ft (13.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,534 (2022)
Projected traffic4,241 by 2042
Trucks18%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemYes

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 US-89NB Off-Ramp over Nb.Frontage Road built?

It was built in 2004, making it 21 years old in 2025.

What condition is US-89NB Off-Ramp over Nb.Frontage 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 June 2023.

How much traffic does US-89NB Off-Ramp over Nb.Frontage Road carry?

About 3,534 vehicles per day (2022 count), of which roughly 18% are trucks.

How long is US-89NB Off-Ramp over Nb.Frontage Road?

The structure is 321 ft (97.9 m) long with a longest span of 157 ft (48 m) and a deck 48 ft wide.

Who owns US-89NB Off-Ramp over Nb.Frontage Road?

It is owned by the State Highway Agency.