US Bridges

124th Street over Cap Canal

Good

Maricopa County, Arizona · 0.5 MI S Shea Blvd · Structure no. 08793

Built
1982
43 years old
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
86 ft
1 main span
Daily traffic
1,494
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

124th Street over Cap Canal is a prestressed concrete stringer/multi-beam or girder carrying 124th Street over Cap Canal in Maricopa County, Arizona. It was built in 1982, so it is 43 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 1,494 vehicles a day, roughly 2% of them trucks, projected to reach 1,504 by 2041. The structure is 86 ft (26.2 m) long and 57 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Carries124th Street
CrossesCap Canal
Location0.5 MI S Shea Blvd
RouteCity Street 0
StateArizona
Coordinates33.57736, -111.81339
Functional classUrban Collector

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
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 geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating25 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length86 ft (26.2 m)
Longest span83 ft (25.3 m)
Deck width57 ft (17.4 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,494 (2021)
Projected traffic1,504 by 2041
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was 124th Street over Cap Canal built?

It was built in 1982, making it 43 years old in 2025.

What condition is 124th Street over Cap 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 December 2024.

How much traffic does 124th Street over Cap Canal carry?

About 1,494 vehicles per day (2021 count), of which roughly 2% are trucks.

How long is 124th Street over Cap Canal?

The structure is 86 ft (26.2 m) long with a longest span of 83 ft (25.3 m) and a deck 57 ft wide.

Who owns 124th Street over Cap Canal?

It is owned by the City or Municipal Highway Agency.