US Bridges

SR 303L over Ramp E-N

Good

Maricopa County, Arizona · 400 Ft W JCT I-17 · Structure no. 02924

Built
2010
15 years old
Condition
Good
inspected February 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
112 ft
1 main span
Daily traffic
26,433
2022 count
Owner
State
State Highway Agency

About this bridge

SR 303L over Ramp E-N is a prestressed concrete box beam or girders - single or spread carrying SR 303L over Ramp E-N 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 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 26,433 vehicles a day, roughly 11% of them trucks, projected to reach 26,443 by 2042. The structure is 112 ft (34.1 m) long and 33 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesSR 303L
CrossesRamp E-N
Location400 Ft W JCT I-17
RouteState Highway 303
CountyMaricopa County
StateArizona
Coordinates33.76943, -112.13242
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
Deck7 GoodSome minor problems.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Approach roadway alignment8: Equal to present desirable criteria
Operating rating78 US tons
Inventory rating47 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 25 or greater
Structure length112 ft (34.1 m)
Longest span103 ft (31.4 m)
Deck width33 ft (10.1 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deck38 ft (11.6 m)

Traffic and service

Average daily traffic26,433 (2022)
Projected traffic26,443 by 2042
Trucks11%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.2 mi (2 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was SR 303L over Ramp E-N built?

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

What condition is SR 303L over Ramp E-N 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 Ramp E-N carry?

About 26,433 vehicles per day (2022 count), of which roughly 11% are trucks.

How long is SR 303L over Ramp E-N?

The structure is 112 ft (34.1 m) long with a longest span of 103 ft (31.4 m) and a deck 33 ft wide.

Who owns SR 303L over Ramp E-N?

It is owned by the State Highway Agency.