US Bridges

I 19; SB over Tinaja Wash

Fair

Pima County, Arizona · 23.3 MI N JCT SR 289 · Structure no. 01749

Built
1977
48 years old
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
129 ft
4 main spans
Daily traffic
10,482
2021 count
Owner
State
State Highway Agency

About this bridge

I 19; SB over Tinaja Wash is a concrete continuous slab carrying I 19; SB over Tinaja Wash in Pima County, Arizona. It was built in 1977, so it is 48 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 10,482 vehicles a day, roughly 14% of them trucks, projected to reach 10,492 by 2041. The structure is 129 ft (39.3 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; SB
CrossesTinaja Wash
Location23.3 MI N JCT SR 289
RouteInterstate 19
CountyPima County
StateArizona
Coordinates31.7395, -111.0504
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation6: Equal to present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating41 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length129 ft (39.3 m)
Longest span35 ft (10.7 m)
Deck width45 ft (13.6 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic10,482 (2021)
Projected traffic10,492 by 2041
Trucks14%
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; SB over Tinaja Wash built?

It was built in 1977, making it 48 years old in 2025.

What condition is I 19; SB over Tinaja 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 2023.

How much traffic does I 19; SB over Tinaja Wash carry?

About 10,482 vehicles per day (2021 count), of which roughly 14% are trucks.

How long is I 19; SB over Tinaja Wash?

The structure is 129 ft (39.3 m) long with a longest span of 35 ft (10.7 m) and a deck 45 ft wide.

Who owns I 19; SB over Tinaja Wash?

It is owned by the State Highway Agency.