US Bridges

Mcdowell Road over Agua Fria River

Fair

Maricopa County, Arizona · 0.75 MI E of Dysart RD · Structure no. 09896

Built
1985
40 years old
Condition
Fair
inspected June 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
1,252 ft
10 main spans
Daily traffic
38,700
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Mcdowell Road over Agua Fria River is a prestressed concrete continuous stringer/multi-beam or girder carrying Mcdowell Road over Agua Fria River in Maricopa County, Arizona. It was built in 1985, so it is 40 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 38,700 vehicles a day, roughly 3% of them trucks, projected to reach 38,710 by 2040. The structure is 1,252 ft (381.6 m) long and 61 ft wide. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesMcdowell Road
CrossesAgua Fria River
Location0.75 MI E of Dysart RD
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.4633, -112.332
Functional classUrban Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating93 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans10
Design loadHS 20
Structure length1,252 ft (381.6 m)
Longest span125 ft (38.1 m)
Deck width61 ft (18.7 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deck20 ft (6.1 m)

Traffic and service

Average daily traffic38,700 (2020)
Projected traffic38,710 by 2040
Trucks3%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.1 mi (5 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 proposedWidening with deck rehabilitation or replacement
Estimated improvement cost$8,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Mcdowell Road over Agua Fria River built?

It was built in 1985, making it 40 years old in 2025.

What condition is Mcdowell Road over Agua Fria River 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 June 2023.

How much traffic does Mcdowell Road over Agua Fria River carry?

About 38,700 vehicles per day (2020 count), of which roughly 3% are trucks.

How long is Mcdowell Road over Agua Fria River?

The structure is 1,252 ft (381.6 m) long with a longest span of 125 ft (38.1 m) and a deck 61 ft wide.

Who owns Mcdowell Road over Agua Fria River?

It is owned by the City or Municipal Highway Agency.