US Bridges

I 19; NB over Wash

Good

Pima County, Arizona · 3.7 MI N JCT B 19 · Structure no. 05790

Built
1969
56 years old
Condition
Good
inspected April 2021
Type
Culvert
Concrete Continuous
Length
53 ft
5 main spans
Daily traffic
20,297
2019 count
Owner
State
State Highway Agency

About this bridge

I 19; NB over Wash is a concrete continuous culvert carrying I 19; NB over Wash in Pima County, Arizona. It was built in 1969, so it is 56 years old, older 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 20,297 vehicles a day, roughly 15% of them trucks, projected to reach 20,307 by 2039. The structure is 53 ft (16.2 m) long and 58 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 19; NB
CrossesWash
Location3.7 MI N JCT B 19
RouteInterstate 19
CountyPima County
StateArizona
Coordinates31.9633, -110.9882
Functional classUrban Principal Arterial - Interstate

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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionApril 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating55 US tons
Inventory rating33 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length53 ft (16.2 m)
Longest span10 ft (3 m)
Deck width58 ft (17.8 m)
Roadway width52 ft (15.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,297 (2019)
Projected traffic20,307 by 2039
Trucks15%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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 I 19; NB over Wash built?

It was built in 1969, making it 56 years old in 2025.

What condition is I 19; NB 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 April 2021.

How much traffic does I 19; NB over Wash carry?

About 20,297 vehicles per day (2019 count), of which roughly 15% are trucks.

How long is I 19; NB over Wash?

The structure is 53 ft (16.2 m) long with a longest span of 10 ft (3 m) and a deck 58 ft wide.

Who owns I 19; NB over Wash?

It is owned by the State Highway Agency.