US Bridges

Quarterline RD over Wash

Good

Maricopa County, Arizona · E of Signal Butte · Structure no. 11548

Built
2003
22 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
1,000
2025 count
Owner
County
County Highway Agency

About this bridge

Quarterline RD over Wash is a concrete continuous culvert carrying Quarterline RD over Wash in Maricopa County, Arizona. It was built in 2003, so it is 22 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 1,000 vehicles a day, projected to reach 1,010 by 2042. The structure is 24 ft (7.3 m) long and 28 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesQuarterline RD
CrossesWash
LocationE of Signal Butte
RouteCounty Highway 0
CountyMaricopa County
StateArizona
Coordinates33.426, -111.5983
Functional classUrban Local

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 inspectionJanuary 2025
Inspection intervalevery 36 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 adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.4 US tons
Inventory rating32 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span12 ft (3.7 m)
Deck width28 ft (8.5 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2025)
Projected traffic1,010 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Quarterline RD over Wash built?

It was built in 2003, making it 22 years old in 2025.

What condition is Quarterline RD 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 January 2025.

How much traffic does Quarterline RD over Wash carry?

About 1,000 vehicles per day (2025 count).

How long is Quarterline RD over Wash?

The structure is 24 ft (7.3 m) long with a longest span of 12 ft (3.7 m) and a deck 28 ft wide.

Who owns Quarterline RD over Wash?

It is owned by the County Highway Agency.