US Bridges

SR 101L over SB Frontage Road

Good

Maricopa County, Arizona · 0.25 MI N of L101/L202 · Structure no. 02615

Built
2003
22 years old
Condition
Good
inspected January 2025
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
366 ft
2 main spans
Daily traffic
26,365
2023 count
Owner
State
State Highway Agency

About this bridge

SR 101L over SB Frontage Road is a prestressed concrete continuous box beam or girders - single or spread carrying SR 101L over SB Frontage Road in Maricopa County, Arizona. It was built in 2003, so it is 22 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 26,365 vehicles a day, roughly 28% of them trucks, projected to reach 26,375 by 2042. The structure is 366 ft (111.6 m) long and 84 ft wide. If it were closed, the detour would be 6.2 mi (10 km).

Location

Open in Google Maps
CarriesSR 101L
CrossesSB Frontage Road
Location0.25 MI N of L101/L202
RouteState Highway 101
CountyMaricopa County
StateArizona
Coordinates33.2959, -111.8945
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
Deck8 Very GoodNo problems noted.
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 geometry9: Superior to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating67 US tons
Inventory rating40 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length366 ft (111.6 m)
Longest span180 ft (54.9 m)
Deck width84 ft (25.6 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic26,365 (2023)
Projected traffic26,375 by 2042
Trucks28%
Lanes on structure3
Traffic directionOne-way traffic
CarriesThird level (interchange)
CrossesHighway
Detour if closed6.2 mi (10 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 101L over SB Frontage Road built?

It was built in 2003, making it 22 years old in 2025.

What condition is SR 101L over SB Frontage Road 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 SR 101L over SB Frontage Road carry?

About 26,365 vehicles per day (2023 count), of which roughly 28% are trucks.

How long is SR 101L over SB Frontage Road?

The structure is 366 ft (111.6 m) long with a longest span of 180 ft (54.9 m) and a deck 84 ft wide.

Who owns SR 101L over SB Frontage Road?

It is owned by the State Highway Agency.