US Bridges

Mcdowell Road over Cap Canal

Good

Maricopa County, Arizona · 0.2 MI E JCT Power RD · Structure no. 10499

Built
2007
18 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
103 ft
1 main span
Daily traffic
14,597
2023 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mcdowell Road over Cap Canal is a prestressed concrete stringer/multi-beam or girder carrying Mcdowell Road over Cap Canal in Maricopa County, Arizona. It was built in 2007, so it is 18 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 14,597 vehicles a day, roughly 5% of them trucks, projected to reach 14,607 by 2042. The structure is 103 ft (31.4 m) long and 118 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesMcdowell Road
CrossesCap Canal
Location0.2 MI E JCT Power RD
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.4664, -111.6814
Functional classUrban Minor Arterial

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2024
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating68 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length103 ft (31.4 m)
Longest span97 ft (29.6 m)
Deck width118 ft (36.1 m)
Roadway width89 ft (27.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,597 (2023)
Projected traffic14,607 by 2042
Trucks5%
Lanes on structure7
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was Mcdowell Road over Cap Canal built?

It was built in 2007, making it 18 years old in 2025.

What condition is Mcdowell Road over Cap 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 December 2024.

How much traffic does Mcdowell Road over Cap Canal carry?

About 14,597 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is Mcdowell Road over Cap Canal?

The structure is 103 ft (31.4 m) long with a longest span of 97 ft (29.6 m) and a deck 118 ft wide.

Who owns Mcdowell Road over Cap Canal?

It is owned by the City or Municipal Highway Agency.