US Bridges

Thomas Road over 303L NB & SB

Good

Maricopa County, Arizona · 1.15 MI N I-10 · Structure no. 02977

Built
2014
11 years old
Condition
Good
inspected October 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
311 ft
2 main spans
Daily traffic
2,058
2021 count
Owner
State
State Highway Agency

About this bridge

Thomas Road over 303L NB & SB is a prestressed concrete continuous box beam or girders - single or spread carrying Thomas Road over 303L NB & SB in Maricopa County, Arizona. It was built in 2014, so it is 11 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 2,058 vehicles a day, roughly 5% of them trucks, projected to reach 2,068 by 2041. The structure is 311 ft (94.8 m) long and 35 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesThomas Road
Crosses303L NB & SB
Location1.15 MI N I-10
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.4798, -112.4243
Functional classUrban Minor Arterial

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 2024
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 alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating67 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHL 93
Structure length311 ft (94.8 m)
Longest span165 ft (50.3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,058 (2021)
Projected traffic2,068 by 2041
Trucks5%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesHighway
Detour if closed1.9 mi (3 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 Thomas Road over 303L NB & SB built?

It was built in 2014, making it 11 years old in 2025.

What condition is Thomas Road over 303L NB & SB 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 2024.

How much traffic does Thomas Road over 303L NB & SB carry?

About 2,058 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Thomas Road over 303L NB & SB?

The structure is 311 ft (94.8 m) long with a longest span of 165 ft (50.3 m) and a deck 35 ft wide.

Who owns Thomas Road over 303L NB & SB?

It is owned by the State Highway Agency.