US Bridges

Third Street over I-10

Good

Maricopa County, Arizona · 2.4 MI E JCT I-17 · Structure no. 01965

Built
1987
38 years old
Condition
Good
inspected May 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
284 ft
3 main spans
Daily traffic
15,350
2024 count
Owner
State
State Highway Agency

About this bridge

Third Street over I-10 is a prestressed concrete continuous box beam or girders - single or spread carrying Third Street over I-10 in Maricopa County, Arizona. It was built in 1987, so it is 38 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 15,350 vehicles a day, roughly 2% of them trucks, projected to reach 15,360 by 2042. The structure is 284 ft (86.6 m) long and 81 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesThird Street
CrossesI-10
Location2.4 MI E JCT I-17
RouteCity Street 0
StateArizona
Coordinates33.462, -112.0694
Functional classUrban Collector

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 inspectionMay 2024
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 rating80 US tons
Inventory rating40 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length284 ft (86.6 m)
Longest span132 ft (40.2 m)
Deck width81 ft (24.6 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deck18 ft (5.5 m)

Traffic and service

Average daily traffic15,350 (2024)
Projected traffic15,360 by 2042
Trucks2%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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 Third Street over I-10 built?

It was built in 1987, making it 38 years old in 2025.

What condition is Third Street over I-10 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 May 2024.

How much traffic does Third Street over I-10 carry?

About 15,350 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Third Street over I-10?

The structure is 284 ft (86.6 m) long with a longest span of 132 ft (40.2 m) and a deck 81 ft wide.

Who owns Third Street over I-10?

It is owned by the State Highway Agency.