US Bridges

Thompson Peak Pkwy over Cap Canal

Good

Maricopa County, Arizona · 0.5 MI SW JCT Mcd Mtn Rn · Structure no. 10218

Built
2000
25 years old
Condition
Good
inspected April 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
277 ft
3 main spans
Daily traffic
11,267
2024 count
Owner
City
City or Municipal Highway Agency

About this bridge

Thompson Peak Pkwy over Cap Canal is a prestressed concrete continuous stringer/multi-beam or girder carrying Thompson Peak Pkwy over Cap Canal in Maricopa County, Arizona. It was built in 2000, so it is 25 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 11,267 vehicles a day, roughly 2% of them trucks, projected to reach 11,277 by 2042. The structure is 277 ft (84.4 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesThompson Peak Pkwy
CrossesCap Canal
Location0.5 MI SW JCT Mcd Mtn Rn
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.62486, -111.87035
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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionApril 2024
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 rating99 US tons
Inventory rating37 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length277 ft (84.4 m)
Longest span97 ft (29.6 m)
Deck width45 ft (13.7 m)
Roadway width33 ft (10.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,267 (2024)
Projected traffic11,277 by 2042
Trucks2%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 Thompson Peak Pkwy over Cap Canal built?

It was built in 2000, making it 25 years old in 2025.

What condition is Thompson Peak Pkwy 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 April 2024.

How much traffic does Thompson Peak Pkwy over Cap Canal carry?

About 11,267 vehicles per day (2024 count), of which roughly 2% are trucks.

How long is Thompson Peak Pkwy over Cap Canal?

The structure is 277 ft (84.4 m) long with a longest span of 97 ft (29.6 m) and a deck 45 ft wide.

Who owns Thompson Peak Pkwy over Cap Canal?

It is owned by the City or Municipal Highway Agency.