US Bridges

40th Street over Western Canal

Good

Maricopa County, Arizona · 0.33 MI N of Baseline RD · Structure no. 09958

Built
1987
38 years old
Condition
Good
inspected November 2022
Type
Box Beam or Girders - Multiple
Prestressed Concrete
Length
47 ft
1 main span
Daily traffic
14,525
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

40th Street over Western Canal is a prestressed concrete box beam or girders - multiple carrying 40th Street over Western Canal in Maricopa County, Arizona. It was built in 1987, so it is 38 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 14,525 vehicles a day, roughly 5% of them trucks, projected to reach 14,535 by 2041. The structure is 47 ft (14.3 m) long and 80 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Carries40th Street
CrossesWestern Canal
Location0.33 MI N of Baseline RD
RouteCity Street 0
StateArizona
Coordinates33.3828, -111.9956
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.
Superstructure7 GoodSome minor problems.
Substructure8 Very GoodNo problems noted.
Channel and channel protection7 GoodSome minor problems.
Last inspectionNovember 2022
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating60.8 US tons
Inventory rating36.4 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length47 ft (14.3 m)
Longest span46 ft (14 m)
Deck width80 ft (24.4 m)
Roadway width64 ft (19.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,525 (2021)
Projected traffic14,535 by 2041
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed3.7 mi (6 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was 40th Street over Western Canal built?

It was built in 1987, making it 38 years old in 2025.

What condition is 40th Street over Western 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 November 2022.

How much traffic does 40th Street over Western Canal carry?

About 14,525 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is 40th Street over Western Canal?

The structure is 47 ft (14.3 m) long with a longest span of 46 ft (14 m) and a deck 80 ft wide.

Who owns 40th Street over Western Canal?

It is owned by the City or Municipal Highway Agency.