I 19; NB over Anaconda Pipeline

Good

Pima County, Arizona · 0.6 MI N JCT Nogales HWY · Structure no. 01568

Built: 1971; 54 years old
Condition: Good; inspected May 2023
Type: Slab; Concrete Continuous
Length: 68 ft; 3 main spans
Daily traffic: 21,137; 2021 count
Owner: State; State Highway Agency

About this bridge

I 19; NB over Anaconda Pipeline is a concrete continuous slab carrying I 19; NB over Anaconda Pipeline in Pima County, Arizona. It was built in 1971, so it is 54 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 21,137 vehicles a day, roughly 17% of them trucks, projected to reach 21,147 by 2041. The structure is 68 ft (20.7 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 19; NB

CrossesAnaconda Pipeline

Location0.6 MI N JCT Nogales HWY

RouteInterstate 19

CountyPima County

StateArizona

Coordinates31.91331, -110.98567

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.

Component	Rating	Meaning
Deck	7 Good	Some minor problems.
Superstructure	7 Good	Some minor problems.
Substructure	7 Good	Some minor problems.

Last inspectionMay 2023

Inspection intervalevery 24 months

Operating statusOpen, no restriction

ScourBridge not over waterway

Structural evaluation7: Better than present minimum criteria

Deck geometry8: Equal to present desirable criteria

Approach roadway alignment8: Equal to present desirable criteria

Operating rating56 US tons

Inventory rating33 US tons

Structure

Structure typeSlab

MaterialConcrete Continuous

DeckConcrete, cast-in-place

Main spans3

Design loadHS 20

Structure length68 ft (20.7 m)

Longest span25 ft (7.6 m)

Deck width45 ft (13.6 m)

Roadway width42 ft (12.8 m)

Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic21,137 (2021)

Projected traffic21,147 by 2041

Trucks17%

Lanes on structure2

Traffic directionOne-way traffic

CarriesHighway

CrossesHighway

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—

NavigationNot applicable (no waterway)

Frequently asked questions

When was I 19; NB over Anaconda Pipeline built?

It was built in 1971, making it 54 years old in 2025.

What condition is I 19; NB over Anaconda Pipeline 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 2023.

How much traffic does I 19; NB over Anaconda Pipeline carry?

About 21,137 vehicles per day (2021 count), of which roughly 17% are trucks.

How long is I 19; NB over Anaconda Pipeline?

The structure is 68 ft (20.7 m) long with a longest span of 25 ft (7.6 m) and a deck 45 ft wide.

Who owns I 19; NB over Anaconda Pipeline?

It is owned by the State Highway Agency.