US Bridges

Center Parkway over SPRR & Grand Canal

Good

Maricopa County, Arizona · 650 Ft S of Washington ST · Structure no. 09838

Built
1993
32 years old
Condition
Good
inspected September 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
240 ft
2 main spans
Daily traffic
4,551
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Center Parkway over SPRR & Grand Canal is a prestressed concrete continuous box beam or girders - single or spread carrying Center Parkway over SPRR & Grand Canal in Maricopa County, Arizona. It was built in 1993, so it is 32 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 4,551 vehicles a day, roughly 10% of them trucks, projected to reach 4,561 by 2042. The structure is 240 ft (73.2 m) long and 85 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesCenter Parkway
CrossesSPRR & Grand Canal
Location650 Ft S of Washington ST
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.4373, -111.9495
Functional classUrban Local

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.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length240 ft (73.2 m)
Longest span118 ft (36 m)
Deck width85 ft (26 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deck30 ft (9.1 m)

Traffic and service

Average daily traffic4,551 (2023)
Projected traffic4,561 by 2042
Trucks10%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad and waterway
Detour if closed5 mi (8 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Center Parkway over SPRR & Grand Canal built?

It was built in 1993, making it 32 years old in 2025.

What condition is Center Parkway over SPRR & Grand Canal 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 Center Parkway over SPRR & Grand Canal carry?

About 4,551 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Center Parkway over SPRR & Grand Canal?

The structure is 240 ft (73.2 m) long with a longest span of 118 ft (36 m) and a deck 85 ft wide.

Who owns Center Parkway over SPRR & Grand Canal?

It is owned by the City or Municipal Highway Agency.