US Bridges

Ramp W-N over NB Frontage Road

Good

Maricopa County, Arizona · 1 MI S of Chandler Blvd · Structure no. 02618

Built
2004
21 years old
Condition
Good
inspected January 2025
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
480 ft
3 main spans
Daily traffic
32,115
2023 count
Owner
State
State Highway Agency

About this bridge

Ramp W-N over NB Frontage Road is a prestressed concrete continuous box beam or girders - single or spread carrying Ramp W-N over NB Frontage Road in Maricopa County, Arizona. It was built in 2004, so it is 21 years old, younger than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 32,115 vehicles a day, roughly 8% of them trucks, projected to reach 32,125 by 2042. The structure is 480 ft (146.3 m) long and 43 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

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CarriesRamp W-N
CrossesNB Frontage Road
Location1 MI S of Chandler Blvd
RouteState Highway 202
CountyMaricopa County
StateArizona
Coordinates33.293, -111.8919
Functional classUrban Principal Arterial - Other Freeway or Expressway

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating63.1 US tons
Inventory rating37 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length480 ft (146.3 m)
Longest span202 ft (61.6 m)
Deck width43 ft (13.2 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic32,115 (2023)
Projected traffic32,125 by 2042
Trucks8%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed6.2 mi (10 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 Ramp W-N over NB Frontage Road built?

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

What condition is Ramp W-N over NB Frontage Road in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in January 2025.

How much traffic does Ramp W-N over NB Frontage Road carry?

About 32,115 vehicles per day (2023 count), of which roughly 8% are trucks.

How long is Ramp W-N over NB Frontage Road?

The structure is 480 ft (146.3 m) long with a longest span of 202 ft (61.6 m) and a deck 43 ft wide.

Who owns Ramp W-N over NB Frontage Road?

It is owned by the State Highway Agency.