US Bridges

SR 87 over Cap Canal

Good

Maricopa County, Arizona · 13.2 MI N JCT US 60 · Structure no. 01408

Built
1981
44 years old, rebuilt 1996
Condition
Good
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
99 ft
1 main span
Daily traffic
24,668
2022 count
Owner
State
State Highway Agency

About this bridge

SR 87 over Cap Canal is a prestressed concrete stringer/multi-beam or girder carrying SR 87 over Cap Canal in Maricopa County, Arizona. It was built in 1981 and reconstructed in 1996, so it is 44 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 24,668 vehicles a day, roughly 19% of them trucks, projected to reach 24,678 by 2042. The structure is 99 ft (30.2 m) long and 121 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesSR 87
CrossesCap Canal
Location13.2 MI N JCT US 60
RouteState Highway 87
CountyMaricopa County
StateArizona
Coordinates33.5509, -111.7216
Functional classRural Principal Arterial - Other

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.
Substructure8 Very GoodNo problems noted.
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 evaluation8: Equal to present desirable criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating99 US tons
Inventory rating47 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 span94 ft (28.7 m)
Deck width121 ft (36.9 m)
Roadway width91 ft (27.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,668 (2022)
Projected traffic24,678 by 2042
Trucks19%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 SR 87 over Cap Canal built?

It was built in 1981, making it 44 years old in 2025. It was reconstructed in 1996.

What condition is SR 87 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 SR 87 over Cap Canal carry?

About 24,668 vehicles per day (2022 count), of which roughly 19% are trucks.

How long is SR 87 over Cap Canal?

The structure is 99 ft (30.2 m) long with a longest span of 94 ft (28.7 m) and a deck 121 ft wide.

Who owns SR 87 over Cap Canal?

It is owned by the State Highway Agency.