US Bridges

I 10;WB over Davidson Canyon

Good

Pima County, Arizona · 2.7 MI E JCT SR 83 · Structure no. 00598

Built
1961
64 years old, rebuilt 2016
Condition
Good
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
363 ft
3 main spans
Daily traffic
24,559
2023 count
Owner
State
State Highway Agency

About this bridge

I 10;WB over Davidson Canyon is a prestressed concrete continuous stringer/multi-beam or girder carrying I 10;WB over Davidson Canyon in Pima County, Arizona. It was built in 1961 and reconstructed in 2016, so it is 64 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 24,559 vehicles a day, roughly 30% of them trucks, projected to reach 24,569 by 2042. The structure is 363 ft (110.6 m) long and 45 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesI 10;WB
CrossesDavidson Canyon
Location2.7 MI E JCT SR 83
RouteInterstate 10
StateArizona
Coordinates31.9975, -110.6466
Functional classRural 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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating36 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHL 93
Structure length363 ft (110.6 m)
Longest span120 ft (36.6 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,559 (2023)
Projected traffic24,569 by 2042
Trucks30%
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 10;WB over Davidson Canyon built?

It was built in 1961, making it 64 years old in 2025. It was reconstructed in 2016.

What condition is I 10;WB over Davidson Canyon 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 January 2024.

How much traffic does I 10;WB over Davidson Canyon carry?

About 24,559 vehicles per day (2023 count), of which roughly 30% are trucks.

How long is I 10;WB over Davidson Canyon?

The structure is 363 ft (110.6 m) long with a longest span of 120 ft (36.6 m) and a deck 45 ft wide.

Who owns I 10;WB over Davidson Canyon?

It is owned by the State Highway Agency.