US Bridges

NB 101L over Ramp W to N

Good

Maricopa County, Arizona · S Quadrant of 101/60 Ti · Structure no. 02486

Built
1999
26 years old
Condition
Good
inspected December 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
170 ft
3 main spans
Daily traffic
97,538
2022 count
Owner
State
State Highway Agency

About this bridge

NB 101L over Ramp W to N is a prestressed concrete continuous box beam or girders - single or spread carrying NB 101L over Ramp W to N in Maricopa County, Arizona. It was built in 1999, so it is 26 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 97,538 vehicles a day, roughly 14% of them trucks, projected to reach 97,548 by 2042. The structure is 170 ft (51.8 m) long and 73 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNB 101L
CrossesRamp W to N
LocationS Quadrant of 101/60 Ti
RouteState Highway 101
CountyMaricopa County
StateArizona
Coordinates33.3835, -111.8912
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 inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating84 US tons
Inventory rating47 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length170 ft (51.8 m)
Longest span76 ft (23.2 m)
Deck width73 ft (22.3 m)
Roadway width70 ft (21.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic97,538 (2022)
Projected traffic97,548 by 2042
Trucks14%
Lanes on structure4
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed1.2 mi (2 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 NB 101L over Ramp W to N built?

It was built in 1999, making it 26 years old in 2025.

What condition is NB 101L over Ramp W to N 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 December 2023.

How much traffic does NB 101L over Ramp W to N carry?

About 97,538 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is NB 101L over Ramp W to N?

The structure is 170 ft (51.8 m) long with a longest span of 76 ft (23.2 m) and a deck 73 ft wide.

Who owns NB 101L over Ramp W to N?

It is owned by the State Highway Agency.