US Bridges

SR 74 over Waddell Canal

Fair

Maricopa County, Arizona · 9.1 MI W JCT I 17 · Structure no. 02079

Built
1986
39 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
99 ft
1 main span
Daily traffic
7,411
2022 count
Owner
State
State Highway Agency

About this bridge

SR 74 over Waddell Canal is a prestressed concrete stringer/multi-beam or girder carrying SR 74 over Waddell Canal in Maricopa County, Arizona. It was built in 1986, so it is 39 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 7,411 vehicles a day, roughly 12% of them trucks, projected to reach 7,421 by 2042. The structure is 99 ft (30.2 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
CrossesWaddell Canal
Location9.1 MI W JCT I 17
RouteState Highway 74
CountyMaricopa County
StateArizona
Coordinates33.8279, -112.2688
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
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 evaluation6: Equal to 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 rating99 US tons
Inventory rating46 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length99 ft (30.2 m)
Longest span96 ft (29.3 m)
Deck width47 ft (14.4 m)
Roadway width44 ft (13.4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,411 (2022)
Projected traffic7,421 by 2042
Trucks12%
Lanes on structure3
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
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 (2024 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was SR 74 over Waddell Canal built?

It was built in 1986, making it 39 years old in 2025.

What condition is SR 74 over Waddell 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 SR 74 over Waddell Canal carry?

About 7,411 vehicles per day (2022 count), of which roughly 12% are trucks.

How long is SR 74 over Waddell Canal?

The structure is 99 ft (30.2 m) long with a longest span of 96 ft (29.3 m) and a deck 47 ft wide.

Who owns SR 74 over Waddell Canal?

It is owned by the State Highway Agency.