US Bridges

IRR I 19; NB over Old Road

Fair

Pima County, Arizona · 9.8 MI North of JCT B 19 · Structure no. 01305

Built
1968
57 years old
Condition
Fair
inspected September 2023
Type
Slab
Concrete Continuous
Length
69 ft
3 main spans
Daily traffic
24,398
2022 count
Owner
State
State Highway Agency

About this bridge

IRR I 19; NB over Old Road is a concrete continuous slab carrying IRR I 19; NB over Old Road in Pima County, Arizona. It was built in 1968, so it is 57 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 24,398 vehicles a day, roughly 6% of them trucks, projected to reach 24,408 by 2042. The structure is 69 ft (21 m) long and 40 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesIRR I 19; NB
CrossesOld Road
Location9.8 MI North of JCT B 19
RouteInterstate 19
StateArizona
Coordinates32.0516, -110.9927
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.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum 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 length69 ft (21 m)
Longest span25 ft (7.6 m)
Deck width40 ft (12.3 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,398 (2022)
Projected traffic24,408 by 2042
Trucks6%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesOther
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 IRR I 19; NB over Old Road built?

It was built in 1968, making it 57 years old in 2025.

What condition is IRR I 19; NB over Old Road 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 September 2023.

How much traffic does IRR I 19; NB over Old Road carry?

About 24,398 vehicles per day (2022 count), of which roughly 6% are trucks.

How long is IRR I 19; NB over Old Road?

The structure is 69 ft (21 m) long with a longest span of 25 ft (7.6 m) and a deck 40 ft wide.

Who owns IRR I 19; NB over Old Road?

It is owned by the State Highway Agency.