US Bridges

I 19; NB over SR 189; Mariposa RD

Good

Santa Cruz County, Arizona · 2.9 MI S JCT B19 · Structure no. 02410

Built
1996
29 years old
Condition
Good
inspected April 2024
Type
Box Beam or Girders - Single or Spread
Prestressed Concrete Continuous
Length
210 ft
2 main spans
Daily traffic
11,208
2023 count
Owner
State
State Highway Agency

About this bridge

I 19; NB over SR 189; Mariposa RD is a prestressed concrete continuous box beam or girders - single or spread carrying I 19; NB over SR 189; Mariposa RD in Santa Cruz County, Arizona. It was built in 1996, so it is 29 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 11,208 vehicles a day, roughly 14% of them trucks, projected to reach 11,218 by 2042. The structure is 210 ft (64 m) long and 45 ft wide.

Location

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CarriesI 19; NB
CrossesSR 189; Mariposa RD
Location2.9 MI S JCT B19
RouteInterstate 19
CountySanta Cruz County
StateArizona
Coordinates31.365, -110.9437
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Last inspectionApril 2024
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 rating87 US tons
Inventory rating46 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length210 ft (64 m)
Longest span102 ft (31.1 m)
Deck width45 ft (13.8 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic11,208 (2023)
Projected traffic11,218 by 2042
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesOverpass structure at an interchange
CrossesHighway
Detour if closed—
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 SR 189; Mariposa RD built?

It was built in 1996, making it 29 years old in 2025.

What condition is I 19; NB over SR 189; Mariposa RD 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 2024.

How much traffic does I 19; NB over SR 189; Mariposa RD carry?

About 11,208 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is I 19; NB over SR 189; Mariposa RD?

The structure is 210 ft (64 m) long with a longest span of 102 ft (31.1 m) and a deck 45 ft wide.

Who owns I 19; NB over SR 189; Mariposa RD?

It is owned by the State Highway Agency.