US Bridges

Patton RD over Cap Canal

Fair

Maricopa County, Arizona · 1.7 MI W/ Grand Ave · Structure no. 08569

Built
1981
44 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
119 ft
2 main spans
Daily traffic
6,566
2023 count
Owner
County
County Highway Agency

About this bridge

Patton RD over Cap Canal is a prestressed concrete stringer/multi-beam or girder carrying Patton RD over Cap Canal in Maricopa County, Arizona. It was built in 1981, so it is 44 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 6,566 vehicles a day, roughly 10% of them trucks, projected to reach 6,576 by 2042. The structure is 119 ft (36.2 m) long and 53 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesPatton RD
CrossesCap Canal
Location1.7 MI W/ Grand Ave
RouteCounty Highway 0
CountyMaricopa County
StateArizona
Coordinates33.73867, -112.50903
Functional classRural Major Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating50 US tons
Inventory rating30 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length119 ft (36.2 m)
Longest span57 ft (17.4 m)
Deck width53 ft (16.1 m)
Roadway width50 ft (15.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,566 (2023)
Projected traffic6,576 by 2042
Trucks10%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Patton RD over Cap Canal built?

It was built in 1981, making it 44 years old in 2025.

What condition is Patton RD over Cap Canal 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 December 2024.

How much traffic does Patton RD over Cap Canal carry?

About 6,566 vehicles per day (2023 count), of which roughly 10% are trucks.

How long is Patton RD over Cap Canal?

The structure is 119 ft (36.2 m) long with a longest span of 57 ft (17.4 m) and a deck 53 ft wide.

Who owns Patton RD over Cap Canal?

It is owned by the County Highway Agency.