US Bridges

I 19; Frontage RD over Tinaja Wash

Fair

Pima County, Arizona · 23.3 MI N JCT SR 289 · Structure no. 00356

Built
1932
93 years old, rebuilt 1951
Condition
Fair
inspected May 2023
Type
Slab
Concrete Continuous
Length
65 ft
3 main spans
Daily traffic
2,037
2021 count
Owner
State
State Highway Agency

About this bridge

I 19; Frontage RD over Tinaja Wash is a concrete continuous slab carrying I 19; Frontage RD over Tinaja Wash in Pima County, Arizona. It was built in 1932 and reconstructed in 1951, so it is 93 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 2,037 vehicles a day, roughly 16% of them trucks, projected to reach 2,047 by 2041. The structure is 65 ft (19.8 m) long and 43 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI 19; Frontage RD
CrossesTinaja Wash
Location23.3 MI N JCT SR 289
RouteState Highway 19
CountyPima County
StateArizona
Coordinates31.7398, -111.0517
Functional classRural Minor Collector

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.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41 US tons
Inventory rating24 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadUnknown
Structure length65 ft (19.8 m)
Longest span22 ft (6.7 m)
Deck width43 ft (13.1 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,037 (2021)
Projected traffic2,047 by 2041
Trucks16%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedWidening of existing bridge without deck rehabilitation
Estimated improvement cost$1.1 million (2021 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I 19; Frontage RD over Tinaja Wash built?

It was built in 1932, making it 93 years old in 2025. It was reconstructed in 1951.

What condition is I 19; Frontage RD 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; Frontage RD over Tinaja Wash carry?

About 2,037 vehicles per day (2021 count), of which roughly 16% are trucks.

How long is I 19; Frontage RD over Tinaja Wash?

The structure is 65 ft (19.8 m) long with a longest span of 22 ft (6.7 m) and a deck 43 ft wide.

Who owns I 19; Frontage RD over Tinaja Wash?

It is owned by the State Highway Agency.