US Bridges

Autumn ST over Westbrooke Drnge Channel

Good

Pinal County, Arizona · 0.01 MI N of Westbrooke R · Structure no. 11518

Built
2015
10 years old
Condition
Good
inspected November 2023
Type
Culvert
Concrete Continuous
Length
31 ft
3 main spans
Daily traffic
410
2023 count
Owner
County
County Highway Agency

About this bridge

Autumn ST over Westbrooke Drnge Channel is a concrete continuous culvert carrying Autumn ST over Westbrooke Drnge Channel in Pinal County, Arizona. It was built in 2015, so it is 10 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 410 vehicles a day, roughly 1% of them trucks, projected to reach 420 by 2042. The structure is 31 ft (9.4 m) long and 70 ft wide. If it were closed, the detour would be 0.6 mi (1 km).

Location

Open in Google Maps
CarriesAutumn ST
CrossesWestbrooke Drnge Channel
Location0.01 MI N of Westbrooke R
RouteCounty Highway 0
CountyPinal County
StateArizona
Coordinates33.25957, -111.56955
Functional classUrban Local

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.
Culvert8 Very GoodNo problems noted.
Last inspectionNovember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating58 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length31 ft (9.4 m)
Longest span10 ft (3 m)
Deck width70 ft (21.3 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic410 (2023)
Projected traffic420 by 2042
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed0.6 mi (1 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Autumn ST over Westbrooke Drnge Channel built?

It was built in 2015, making it 10 years old in 2025.

What condition is Autumn ST over Westbrooke Drnge 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 November 2023.

How much traffic does Autumn ST over Westbrooke Drnge Channel carry?

About 410 vehicles per day (2023 count), of which roughly 1% are trucks.

How long is Autumn ST over Westbrooke Drnge Channel?

The structure is 31 ft (9.4 m) long with a longest span of 10 ft (3 m) and a deck 70 ft wide.

Who owns Autumn ST over Westbrooke Drnge Channel?

It is owned by the County Highway Agency.