US Bridges

12th Avenue over Wash

Good

Pima County, Arizona · S 12th Av N of Elvira RD · Structure no. 10429

Built
2002
23 years old
Condition
Good
inspected May 2021
Type
Culvert
Concrete Continuous
Length
76 ft
5 main spans
Daily traffic
7,814
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

12th Avenue over Wash is a concrete continuous culvert carrying 12th Avenue over Wash in Pima County, Arizona. It was built in 2002, so it is 23 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 7,814 vehicles a day, roughly 10% of them trucks, projected to reach 7,824 by 2040. The structure is 76 ft (23.2 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Carries12th Avenue
CrossesWash
LocationS 12th Av N of Elvira RD
RouteCity Street 0
StateArizona
Coordinates32.1276, -110.978
Functional classUrban Collector

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 inspectionMay 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating70 US tons
Inventory rating42 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans5
Design loadHS 20
Structure length76 ft (23.2 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,814 (2020)
Projected traffic7,824 by 2040
Trucks10%
Lanes on structure5
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 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 12th Avenue over Wash built?

It was built in 2002, making it 23 years old in 2025.

What condition is 12th Avenue over Wash 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 May 2021.

How much traffic does 12th Avenue over Wash carry?

About 7,814 vehicles per day (2020 count), of which roughly 10% are trucks.

How long is 12th Avenue over Wash?

The structure is 76 ft (23.2 m) long with a longest span of 10 ft (3 m).

Who owns 12th Avenue over Wash?

It is owned by the City or Municipal Highway Agency.