US Bridges

Thomas Road over Sl 101(PIMA Frwy)

Good

Maricopa County, Arizona · 6.5 MI N of JCT US 60 · Structure no. 02255

Built
1992
33 years old
Condition
Good
inspected January 2025
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
265 ft
2 main spans
Daily traffic
18,889
2023 count
Owner
State
State Highway Agency

About this bridge

Thomas Road over Sl 101(PIMA Frwy) is a prestressed concrete continuous box beam or girders - single or spread carrying Thomas Road over Sl 101(PIMA Frwy) in Maricopa County, Arizona. It was built in 1992, so it is 33 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 18,889 vehicles a day, roughly 12% of them trucks, projected to reach 18,899 by 2042. The structure is 265 ft (80.8 m) long and 97 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesThomas Road
CrossesSl 101(PIMA Frwy)
Location6.5 MI N of JCT US 60
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.4803, -111.8903
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating98 US tons
Inventory rating51 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length265 ft (80.8 m)
Longest span135 ft (41.1 m)
Deck width97 ft (29.5 m)
Roadway width80 ft (24.4 m)
Vertical clearance over deck35 ft (10.6 m)

Traffic and service

Average daily traffic18,889 (2023)
Projected traffic18,899 by 2042
Trucks12%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesOverpass structure at an interchange
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 Sl 101(PIMA Frwy) built?

It was built in 1992, making it 33 years old in 2025.

What condition is Thomas Road over Sl 101(PIMA Frwy) 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 Thomas Road over Sl 101(PIMA Frwy) carry?

About 18,889 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is Thomas Road over Sl 101(PIMA Frwy)?

The structure is 265 ft (80.8 m) long with a longest span of 135 ft (41.1 m) and a deck 97 ft wide.

Who owns Thomas Road over Sl 101(PIMA Frwy)?

It is owned by the State Highway Agency.