US Bridges

LA Palma RD over Santa Rosa Canal

Good

Pinal County, Arizona · 1.0 MI N JCT Houser RD · Structure no. 08953

Built
1985
40 years old
Condition
Good
inspected March 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
72 ft
1 main span
Daily traffic
100
2024 count
Owner
County
County Highway Agency

About this bridge

LA Palma RD over Santa Rosa Canal is a prestressed concrete stringer/multi-beam or girder carrying LA Palma RD over Santa Rosa Canal in Pinal County, Arizona. It was built in 1985, so it is 40 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 100 vehicles a day, projected to reach 120 by 2042. The structure is 72 ft (21.9 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesLA Palma RD
CrossesSanta Rosa Canal
Location1.0 MI N JCT Houser RD
RouteCounty Highway 0
CountyPinal County
StateArizona
Coordinates32.7919, -111.5327
Functional classRural Local

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.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 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 rating66 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans1
Design loadHS 20
Structure length72 ft (21.9 m)
Longest span70 ft (21.3 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck30 ft (9.1 m)

Traffic and service

Average daily traffic100 (2024)
Projected traffic120 by 2042
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 LA Palma RD over Santa Rosa Canal built?

It was built in 1985, making it 40 years old in 2025.

What condition is LA Palma RD over Santa Rosa Canal 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 March 2024.

How much traffic does LA Palma RD over Santa Rosa Canal carry?

About 100 vehicles per day (2024 count).

How long is LA Palma RD over Santa Rosa Canal?

The structure is 72 ft (21.9 m) long with a longest span of 70 ft (21.3 m) and a deck 35 ft wide.

Who owns LA Palma RD over Santa Rosa Canal?

It is owned by the County Highway Agency.