US Bridges

I 17 over 15th. Ave.

Good

Maricopa County, Arizona · 3.4 MI W JCT I 10 · Structure no. 00719

Built
1961
64 years old, rebuilt 1984
Condition
Good
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
104 ft
2 main spans
Daily traffic
95,313
2021 count
Owner
State
State Highway Agency

About this bridge

I 17 over 15th. Ave. is a prestressed concrete stringer/multi-beam or girder carrying I 17 over 15th. Ave. in Maricopa County, Arizona. It was built in 1961 and reconstructed in 1984, so it is 64 years old, older 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 95,313 vehicles a day, roughly 13% of them trucks, projected to reach 95,323 by 2041. The structure is 104 ft (31.7 m) long and 113 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 17
Crosses15th. Ave.
Location3.4 MI W JCT I 10
RouteInterstate 17
CountyMaricopa County
StateArizona
Coordinates33.4297, -112.091
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionAugust 2024
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 rating51 US tons
Inventory rating34 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length104 ft (31.7 m)
Longest span49 ft (14.9 m)
Deck width113 ft (34.4 m)
Roadway width106 ft (32.2 m)
Vertical clearance over deck30 ft (9.1 m)

Traffic and service

Average daily traffic95,313 (2021)
Projected traffic95,323 by 2041
Trucks13%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
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 15th. Ave. built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 1984.

What condition is I 17 over 15th. Ave. 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 August 2024.

How much traffic does I 17 over 15th. Ave. carry?

About 95,313 vehicles per day (2021 count), of which roughly 13% are trucks.

How long is I 17 over 15th. Ave.?

The structure is 104 ft (31.7 m) long with a longest span of 49 ft (14.9 m) and a deck 113 ft wide.

Who owns I 17 over 15th. Ave.?

It is owned by the State Highway Agency.