US Bridges

Sl 101 EB over 31st Avenue

Good

Maricopa County, Arizona · 22.69 MI N of JCT I 10 · Structure no. 02134

Built
1992
33 years old, rebuilt 2011
Condition
Good
inspected April 2023
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete
Length
159 ft
1 main span
Daily traffic
37,779
2021 count
Owner
State
State Highway Agency

About this bridge

Sl 101 EB over 31st Avenue is a prestressed concrete box beam or girders - single or spread carrying Sl 101 EB over 31st Avenue in Maricopa County, Arizona. It was built in 1992 and reconstructed in 2011, 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 37,779 vehicles a day, roughly 7% of them trucks, projected to reach 37,789 by 2041. The structure is 159 ft (48.5 m) long and 108 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesSl 101 EB
Crosses31st Avenue
Location22.69 MI N of JCT I 10
RouteState Highway 101
StateArizona
Coordinates33.6687, -112.1263
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.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating44 US tons

Structure

MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length159 ft (48.5 m)
Longest span156 ft (47.5 m)
Deck width108 ft (32.8 m)
Roadway width105 ft (31.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic37,779 (2021)
Projected traffic37,789 by 2041
Trucks7%
Lanes on structure6
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 Sl 101 EB over 31st Avenue built?

It was built in 1992, making it 33 years old in 2025. It was reconstructed in 2011.

What condition is Sl 101 EB over 31st Avenue 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 April 2023.

How much traffic does Sl 101 EB over 31st Avenue carry?

About 37,779 vehicles per day (2021 count), of which roughly 7% are trucks.

How long is Sl 101 EB over 31st Avenue?

The structure is 159 ft (48.5 m) long with a longest span of 156 ft (47.5 m) and a deck 108 ft wide.

Who owns Sl 101 EB over 31st Avenue?

It is owned by the State Highway Agency.