US Bridges

Pinnacle Peak Road over 39th Drive Drain

Fair

Maricopa County, Arizona · 30FT E of 40th Lane · Structure no. 10068

Built
1987
38 years old
Condition
Fair
inspected November 2021
Type
Culvert
Steel
Length
28 ft
4 main spans
Daily traffic
14,497
2021 count
Owner
City
City or Municipal Highway Agency

About this bridge

Pinnacle Peak Road over 39th Drive Drain is a steel culvert carrying Pinnacle Peak Road over 39th Drive Drain in Maricopa County, Arizona. It was built in 1987, so it is 38 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 14,497 vehicles a day, roughly 5% of them trucks, projected to reach 14,497 by 2041. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPinnacle Peak Road
Crosses39th Drive Drain
Location30FT E of 40th Lane
RouteCity Street 0
CountyMaricopa County
StateArizona
Coordinates33.6982, -112.1465
Functional classUrban Minor Arterial

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 inspectionNovember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans4
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span5 ft (1.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic14,497 (2021)
Projected traffic14,497 by 2041
Trucks5%
Lanes on structure4
Traffic directionHighway traffic not carried
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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was Pinnacle Peak Road over 39th Drive Drain built?

It was built in 1987, making it 38 years old in 2025.

What condition is Pinnacle Peak Road over 39th Drive Drain 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 November 2021.

How much traffic does Pinnacle Peak Road over 39th Drive Drain carry?

About 14,497 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is Pinnacle Peak Road over 39th Drive Drain?

The structure is 28 ft (8.5 m) long with a longest span of 5 ft (1.5 m).

Who owns Pinnacle Peak Road over 39th Drive Drain?

It is owned by the City or Municipal Highway Agency.