US Bridges

Loop 101 over Drain Channel

Good

Maricopa County, Arizona · 0.65 MI N JCT US 60 · Structure no. 06836

Built
1989
36 years old
Condition
Good
inspected April 2021
Type
Culvert
Concrete Continuous
Length
24 ft
2 main spans
Daily traffic
113,128
2019 count
Owner
State
State Highway Agency

About this bridge

Loop 101 over Drain Channel is a concrete continuous culvert carrying Loop 101 over Drain Channel in Maricopa County, Arizona. It was built in 1989, so it is 36 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 113,128 vehicles a day, roughly 3% of them trucks, projected to reach 139,944 by 2040. The structure is 24 ft (7.3 m) long. If it were closed, the detour would be 8.1 mi (13 km).

CarriesLoop 101
CrossesDrain Channel
Location0.65 MI N JCT US 60
RouteState Highway 101
StateArizona
Coordinates33.6015, -112.2544
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
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length24 ft (7.3 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic113,128 (2019)
Projected traffic139,944 by 2040
Trucks3%
Lanes on structure10
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed8.1 mi (13 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$2,000 (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Loop 101 over Drain Channel built?

It was built in 1989, making it 36 years old in 2025.

What condition is Loop 101 over Drain Channel 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 2021.

How much traffic does Loop 101 over Drain Channel carry?

About 113,128 vehicles per day (2019 count), of which roughly 3% are trucks.

How long is Loop 101 over Drain Channel?

The structure is 24 ft (7.3 m) long with a longest span of 8 ft (2.4 m).

Who owns Loop 101 over Drain Channel?

It is owned by the State Highway Agency.