US Bridges

39th Drive over Drainage Channel

Fair

Maricopa County, Arizona · South/Whispering Wind DR · Structure no. 11193

Built
1989
36 years old
Condition
Fair
inspected December 2020
Type
Culvert
Steel
Length
31 ft
3 main spans
Daily traffic
7,500
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

39th Drive over Drainage Channel is a steel culvert carrying 39th Drive over Drainage 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 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 7,500 vehicles a day, roughly 1% of them trucks, projected to reach 7,510 by 2040. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
Carries39th Drive
CrossesDrainage Channel
LocationSouth/Whispering Wind DR
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.7096, -112.1439
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2020
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating98 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span7 ft (2 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,500 (2020)
Projected traffic7,510 by 2040
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was 39th Drive over Drainage Channel built?

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

What condition is 39th Drive over Drainage Channel 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 December 2020.

How much traffic does 39th Drive over Drainage Channel carry?

About 7,500 vehicles per day (2020 count), of which roughly 1% are trucks.

How long is 39th Drive over Drainage Channel?

The structure is 31 ft (9.4 m) long with a longest span of 7 ft (2 m).

Who owns 39th Drive over Drainage Channel?

It is owned by the City or Municipal Highway Agency.