US Bridges

Anderson RD over Santa Cruz River

Fair

Pinal County, Arizona · 0.9 MI S JCT Mar-Cg HWY · Structure no. 09055

Built
1963
62 years old
Condition
Fair
inspected January 2024
Type
Slab
Concrete Continuous
Length
109 ft
4 main spans
Daily traffic
1,005
2022 count
Owner
County
County Highway Agency

About this bridge

Anderson RD over Santa Cruz River is a concrete continuous slab carrying Anderson RD over Santa Cruz River in Pinal County, Arizona. It was built in 1963, so it is 62 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 5 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 1,005 vehicles a day, roughly 5% of them trucks, projected to reach 1,015 by 2042. The structure is 109 ft (33.2 m) long and 31 ft wide. If it were closed, the detour would be 16.8 mi (27 km).

Location

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CarriesAnderson RD
CrossesSanta Cruz River
Location0.9 MI S JCT Mar-Cg HWY
RouteCity Street 0
CountyPinal County
StateArizona
Coordinates32.971, -111.929
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.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
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 adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating44 US tons
Inventory rating26 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length109 ft (33.2 m)
Longest span29 ft (8.8 m)
Deck width31 ft (9.3 m)
Roadway width28 ft (8.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,005 (2022)
Projected traffic1,015 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed16.8 mi (27 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$1,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Anderson RD over Santa Cruz River built?

It was built in 1963, making it 62 years old in 2025.

What condition is Anderson RD over Santa Cruz River 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 January 2024.

How much traffic does Anderson RD over Santa Cruz River carry?

About 1,005 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Anderson RD over Santa Cruz River?

The structure is 109 ft (33.2 m) long with a longest span of 29 ft (8.8 m) and a deck 31 ft wide.

Who owns Anderson RD over Santa Cruz River?

It is owned by the County Highway Agency.