US Bridges

6th Ave over Wash

Fair

Pima County, Arizona · 0.3 MI N. Irvington RD · Structure no. 10399

Built
1957
68 years old, rebuilt 2002
Condition
Fair
inspected May 2021
Type
Culvert
Concrete Continuous
Length
72 ft
6 main spans
Daily traffic
18,995
2020 count
Owner
City
City or Municipal Highway Agency

About this bridge

6th Ave over Wash is a concrete continuous culvert carrying 6th Ave over Wash in Pima County, Arizona. It was built in 1957 and reconstructed in 2002, so it is 68 years old, older 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 18,995 vehicles a day, roughly 5% of them trucks, projected to reach 19,005 by 2040. The structure is 72 ft (21.9 m) long and 80 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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Carries6th Ave
CrossesWash
Location0.3 MI N. Irvington RD
RouteCity Street 0
CountyPima County
StateArizona
Coordinates32.1691, -110.9688
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 inspectionMay 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59 US tons
Inventory rating35.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span10 ft (3 m)
Deck width80 ft (24.4 m)
Roadway width62 ft (18.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic18,995 (2020)
Projected traffic19,005 by 2040
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 6th Ave over Wash built?

It was built in 1957, making it 68 years old in 2025. It was reconstructed in 2002.

What condition is 6th Ave over Wash 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 May 2021.

How much traffic does 6th Ave over Wash carry?

About 18,995 vehicles per day (2020 count), of which roughly 5% are trucks.

How long is 6th Ave over Wash?

The structure is 72 ft (21.9 m) long with a longest span of 10 ft (3 m) and a deck 80 ft wide.

Who owns 6th Ave over Wash?

It is owned by the City or Municipal Highway Agency.