US Bridges

North-West Ramp over I 17; 101L; S Frntage RD

Fair

Maricopa County, Arizona · 3rd Level Center of Ti · Structure no. 02167

Built
1997
28 years old
Condition
Fair
inspected June 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
967 ft
6 main spans
Daily traffic
14,369
2020 count
Owner
State
State Highway Agency

About this bridge

North-West Ramp over I 17; 101L; S Frntage RD is a prestressed concrete continuous box beam or girders - single or spread carrying North-West Ramp over I 17; 101L; S Frntage RD in Maricopa County, Arizona. It was built in 1997, so it is 28 years old, younger than the Arizona average of 47.8 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 14,369 vehicles a day, roughly 7% of them trucks, projected to reach 14,379 by 2040. The structure is 967 ft (294.7 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesNorth-West Ramp
CrossesI 17; 101L; S Frntage RD
Location3rd Level Center of Ti
RouteInterstate 17
CountyMaricopa County
StateArizona
Coordinates33.6676, -112.1128
Functional classUrban 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.
Substructure7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment8: Equal to present desirable criteria
Operating rating67 US tons
Inventory rating40 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length967 ft (294.7 m)
Longest span180 ft (54.9 m)
Deck width31 ft (9.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic14,369 (2020)
Projected traffic14,379 by 2040
Trucks7%
Lanes on structure2
Traffic directionOne-way traffic
CarriesThird level (interchange)
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$3,000 (2022 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was North-West Ramp over I 17; 101L; S Frntage RD built?

It was built in 1997, making it 28 years old in 2025.

What condition is North-West Ramp over I 17; 101L; S Frntage RD 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 2024.

How much traffic does North-West Ramp over I 17; 101L; S Frntage RD carry?

About 14,369 vehicles per day (2020 count), of which roughly 7% are trucks.

How long is North-West Ramp over I 17; 101L; S Frntage RD?

The structure is 967 ft (294.7 m) long with a longest span of 180 ft (54.9 m) and a deck 31 ft wide.

Who owns North-West Ramp over I 17; 101L; S Frntage RD?

It is owned by the State Highway Agency.