US Bridges

SR 303L over Wash

Good

Maricopa County, Arizona · 1.4 MI West of I-17 JCT · Structure no. 07249

Built
2010
15 years old
Condition
Good
inspected February 2023
Type
Culvert
Concrete Continuous
Length
83 ft
4 main spans
Daily traffic
25,940
2023 count
Owner
State
State Highway Agency

About this bridge

SR 303L over Wash is a concrete continuous culvert carrying SR 303L over Wash in Maricopa County, Arizona. It was built in 2010, so it is 15 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25,940 vehicles a day, roughly 17% of them trucks, projected to reach 25,950 by 2042. The structure is 83 ft (25.3 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

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CarriesSR 303L
CrossesWash
Location1.4 MI West of I-17 JCT
RouteState Highway 303
CountyMaricopa County
StateArizona
Coordinates33.7691, -112.15755
Functional classUrban Principal Arterial - Other Freeway or Expressway

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 protection8 Very GoodNo problems noted.
Culvert8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans4
Design loadHS 20
Structure length83 ft (25.3 m)
Longest span14 ft (4.3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25,940 (2023)
Projected traffic25,950 by 2042
Trucks17%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 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 303L over Wash built?

It was built in 2010, making it 15 years old in 2025.

What condition is SR 303L 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 February 2023.

How much traffic does SR 303L over Wash carry?

About 25,940 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is SR 303L over Wash?

The structure is 83 ft (25.3 m) long with a longest span of 14 ft (4.3 m).

Who owns SR 303L over Wash?

It is owned by the State Highway Agency.