US Bridges

SR 74 over Beardsley Canal

Fair

Maricopa County, Arizona · 9.3 MI W JCT I 17 · Structure no. 01621

Built
1972
53 years old
Condition
Fair
inspected May 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
109 ft
1 main span
Daily traffic
6,675
2021 count
Owner
State
State Highway Agency

About this bridge

SR 74 over Beardsley Canal is a prestressed concrete stringer/multi-beam or girder carrying SR 74 over Beardsley Canal in Maricopa County, Arizona. It was built in 1972, so it is 53 years old, older 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 6,675 vehicles a day, roughly 12% of them trucks, projected to reach 6,685 by 2041. The structure is 109 ft (33.2 m) long and 47 ft wide. If it were closed, the detour would be 60.3 mi (97 km).

Location

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CarriesSR 74
CrossesBeardsley Canal
Location9.3 MI W JCT I 17
RouteState Highway 74
CountyMaricopa County
StateArizona
Coordinates33.8279, -112.2741
Functional classRural Principal Arterial - Other

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 inspectionMay 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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating52 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length109 ft (33.2 m)
Longest span105 ft (32 m)
Deck width47 ft (14.2 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,675 (2021)
Projected traffic6,685 by 2041
Trucks12%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway and waterway
Detour if closed60.3 mi (97 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2023 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 74 over Beardsley Canal built?

It was built in 1972, making it 53 years old in 2025.

What condition is SR 74 over Beardsley 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 May 2023.

How much traffic does SR 74 over Beardsley Canal carry?

About 6,675 vehicles per day (2021 count), of which roughly 12% are trucks.

How long is SR 74 over Beardsley Canal?

The structure is 109 ft (33.2 m) long with a longest span of 105 ft (32 m) and a deck 47 ft wide.

Who owns SR 74 over Beardsley Canal?

It is owned by the State Highway Agency.