US Bridges

Conference Drive over SR 101L

Fair

Maricopa County, Arizona · 0.45 S of Elliot RD · Structure no. 02286

Built
1999
26 years old
Condition
Fair
inspected January 2025
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
212 ft
2 main spans
Daily traffic
1,000
2025 count
Owner
State
State Highway Agency

About this bridge

Conference Drive over SR 101L is a prestressed concrete continuous box beam or girders - single or spread carrying Conference Drive over SR 101L in Maricopa County, Arizona. It was built in 1999, so it is 26 years old, younger than the Arizona average of 47.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 6 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,000 vehicles a day, roughly 3% of them trucks, projected to reach 1,010 by 2042. The structure is 212 ft (64.6 m) long and 55 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesConference Drive
CrossesSR 101L
Location0.45 S of Elliot RD
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.343, -111.8938
Functional classUrban Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating86 US tons
Inventory rating37 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length212 ft (64.6 m)
Longest span103 ft (31.4 m)
Deck width55 ft (16.9 m)
Roadway width43 ft (13.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,000 (2025)
Projected traffic1,010 by 2042
Trucks3%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway
Detour if closed1.2 mi (2 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 Conference Drive over SR 101L built?

It was built in 1999, making it 26 years old in 2025.

What condition is Conference Drive over SR 101L in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in January 2025.

How much traffic does Conference Drive over SR 101L carry?

About 1,000 vehicles per day (2025 count), of which roughly 3% are trucks.

How long is Conference Drive over SR 101L?

The structure is 212 ft (64.6 m) long with a longest span of 103 ft (31.4 m) and a deck 55 ft wide.

Who owns Conference Drive over SR 101L?

It is owned by the State Highway Agency.