US Bridges

I-17 over Central Avenue

Good

Maricopa County, Arizona · Central Avenue · Structure no. 20182

Built
2021
4 years old
Condition
Good
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
261 ft
3 main spans
Daily traffic
112,576
2023 count
Owner
State
State Highway Agency

About this bridge

I-17 over Central Avenue is a steel continuous stringer/multi-beam or girder carrying I-17 over Central Avenue in Maricopa County, Arizona. It was built in 2021, so it is 4 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 112,576 vehicles a day, roughly 7% of them trucks, projected to reach 112,586 by 2042. The structure is 261 ft (79.6 m) long and 135 ft wide.

Location

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CarriesI-17
CrossesCentral Avenue
LocationCentral Avenue
RouteInterstate 17
CountyMaricopa County
StateArizona
Coordinates33.4285, -112.0737
Functional classUrban Principal Arterial - Interstate

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.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating71 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length261 ft (79.6 m)
Longest span128 ft (39 m)
Deck width135 ft (41.1 m)
Roadway width130 ft (39.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic112,576 (2023)
Projected traffic112,586 by 2042
Trucks7%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
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-17 over Central Avenue built?

It was built in 2021, making it 4 years old in 2025.

What condition is I-17 over Central Avenue 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 September 2023.

How much traffic does I-17 over Central Avenue carry?

About 112,576 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is I-17 over Central Avenue?

The structure is 261 ft (79.6 m) long with a longest span of 128 ft (39 m) and a deck 135 ft wide.

Who owns I-17 over Central Avenue?

It is owned by the State Highway Agency.