US Bridges

7th ST over I-10

Fair

Maricopa County, Arizona · 2.7 MI E JCT I-17 · Structure no. 01968

Built
1987
38 years old
Condition
Fair
inspected May 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
249 ft
2 main spans
Daily traffic
56,485
2024 count
Owner
State
State Highway Agency

About this bridge

7th ST over I-10 is a prestressed concrete continuous box beam or girders - single or spread carrying 7th ST 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 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 56,485 vehicles a day, roughly 5% of them trucks, projected to reach 56,495 by 2042. The structure is 249 ft (75.9 m) long and 123 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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Carries7th ST
CrossesI-10
Location2.7 MI E JCT I-17
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.4619, -112.0651
Functional classUrban Other Principal Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating66 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length249 ft (75.9 m)
Longest span121 ft (36.9 m)
Deck width123 ft (37.6 m)
Roadway width98 ft (29.9 m)
Vertical clearance over deck16 ft (4.9 m)

Traffic and service

Average daily traffic56,485 (2024)
Projected traffic56,495 by 2042
Trucks5%
Lanes on structure8
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 7th ST over I-10 built?

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

What condition is 7th ST over I-10 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 May 2024.

How much traffic does 7th ST over I-10 carry?

About 56,485 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is 7th ST over I-10?

The structure is 249 ft (75.9 m) long with a longest span of 121 ft (36.9 m) and a deck 123 ft wide.

Who owns 7th ST over I-10?

It is owned by the State Highway Agency.