US Bridges

Castle Hot Springs over Wash

Good

Maricopa County, Arizona · 1.1 MI N of SR 74 · Structure no. 08978

Built
1987
38 years old
Condition
Good
inspected April 2022
Type
Culvert
Concrete Continuous
Length
50 ft
3 main spans
Daily traffic
1,063
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

Castle Hot Springs over Wash is a concrete continuous culvert carrying Castle Hot Springs over Wash 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 1,063 vehicles a day, roughly 5% of them trucks, projected to reach 1,073 by 2040. The structure is 50 ft (15.2 m) long. If it were closed, the detour would be 29.8 mi (48 km).

Location

Open in Google Maps
CarriesCastle Hot Springs
CrossesWash
Location1.1 MI N of SR 74
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.8479, -112.3225
Functional classRural Minor Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating84 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length50 ft (15.2 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,063 (2020)
Projected traffic1,073 by 2040
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed29.8 mi (48 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 Castle Hot Springs over Wash built?

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

What condition is Castle Hot Springs over Wash 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 2022.

How much traffic does Castle Hot Springs over Wash carry?

About 1,063 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is Castle Hot Springs over Wash?

The structure is 50 ft (15.2 m) long with a longest span of 16 ft (4.9 m).

Who owns Castle Hot Springs over Wash?

It is owned by the City or Municipal Highway Agency.