US Bridges

Center Flyover over Sky Harbor Boulevard

Fair

Maricopa County, Arizona · 0.47 MI E of 29th Street · Structure no. 08511

Built
1979
46 years old
Condition
Fair
inspected February 2023
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
82 ft
2 main spans
Daily traffic
100
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Center Flyover over Sky Harbor Boulevard is a concrete continuous box beam or girders - single or spread carrying Center Flyover over Sky Harbor Boulevard in Maricopa County, Arizona. It was built in 1979, so it is 46 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 100 vehicles a day, roughly 1% of them trucks, projected to reach 110 by 2040. The structure is 82 ft (25 m) long and 18 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesCenter Flyover
CrossesSky Harbor Boulevard
Location0.47 MI E of 29th Street
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.4367, -112.0109
Functional classUrban Local

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 inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating61.3 US tons
Inventory rating36.7 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length82 ft (25 m)
Longest span41 ft (12.5 m)
Deck width18 ft (5.6 m)
Roadway width16 ft (4.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2020)
Projected traffic110 by 2040
Trucks1%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1,000 (2021 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Center Flyover over Sky Harbor Boulevard built?

It was built in 1979, making it 46 years old in 2025.

What condition is Center Flyover over Sky Harbor Boulevard 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 February 2023.

How much traffic does Center Flyover over Sky Harbor Boulevard carry?

About 100 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is Center Flyover over Sky Harbor Boulevard?

The structure is 82 ft (25 m) long with a longest span of 41 ft (12.5 m) and a deck 18 ft wide.

Who owns Center Flyover over Sky Harbor Boulevard?

It is owned by the City or Municipal Highway Agency.