US Bridges

I-10 WB Frt RD over SR303L

Good

Maricopa County, Arizona · N of Jnc I-10 & 303L · Structure no. 20107

Built
2016
9 years old
Condition
Good
inspected October 2023
Type
Box Beam or Girders - Multiple
Prestressed Concrete Continuous
Length
236 ft
2 main spans
Daily traffic
5,406
2023 count
Owner
State
State Highway Agency

About this bridge

I-10 WB Frt RD over SR303L is a prestressed concrete continuous box beam or girders - multiple carrying I-10 WB Frt RD over SR303L in Maricopa County, Arizona. It was built in 2016, so it is 9 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 5,406 vehicles a day, roughly 4% of them trucks, projected to reach 5,416 by 2042. The structure is 236 ft (71.9 m) long and 37 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesI-10 WB Frt RD
CrossesSR303L
LocationN of Jnc I-10 & 303L
RouteState Highway 10
CountyMaricopa County
StateArizona
Coordinates33.463, -112.4273
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure8 Very GoodNo problems noted.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation8: Equal to present desirable criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating64 US tons

Structure

Structure typeBox Beam or Girders - Multiple
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length236 ft (71.9 m)
Longest span115 ft (35.1 m)
Deck width37 ft (11.3 m)
Roadway width34 ft (10.4 m)
Vertical clearance over deck29 ft (8.8 m)

Traffic and service

Average daily traffic5,406 (2023)
Projected traffic5,416 by 2042
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

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 I-10 WB Frt RD over SR303L built?

It was built in 2016, making it 9 years old in 2025.

What condition is I-10 WB Frt RD over SR303L 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 October 2023.

How much traffic does I-10 WB Frt RD over SR303L carry?

About 5,406 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is I-10 WB Frt RD over SR303L?

The structure is 236 ft (71.9 m) long with a longest span of 115 ft (35.1 m) and a deck 37 ft wide.

Who owns I-10 WB Frt RD over SR303L?

It is owned by the State Highway Agency.