US Bridges

Redrock RD over I 10; EB & WB

Fair

Pinal County, Arizona · 15.5 MI S JCT SR 84 · Structure no. 00592

Built
1959
66 years old
Condition
Fair
inspected December 2024
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
162 ft
2 main spans
Daily traffic
777
2022 count
Owner
State
State Highway Agency

About this bridge

Redrock RD over I 10; EB & WB is a concrete continuous box beam or girders - single or spread carrying Redrock RD over I 10; EB & WB in Pinal County, Arizona. It was built in 1959, so it is 66 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 777 vehicles a day, roughly 2% of them trucks, projected to reach 787 by 2042. The structure is 162 ft (49.4 m) long and 31 ft wide. If it were closed, the detour would be 14.9 mi (24 km).

Location

Open in Google Maps
CarriesRedrock RD
CrossesI 10; EB & WB
Location15.5 MI S JCT SR 84
RouteCounty Highway 0
CountyPinal County
StateArizona
Coordinates32.5728, -111.323
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
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
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating43 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length162 ft (49.4 m)
Longest span79 ft (24.1 m)
Deck width31 ft (9.4 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic777 (2022)
Projected traffic787 by 2042
Trucks2%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed14.9 mi (24 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1,000 (2024 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was Redrock RD over I 10; EB & WB built?

It was built in 1959, making it 66 years old in 2025.

What condition is Redrock RD over I 10; EB & WB 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 December 2024.

How much traffic does Redrock RD over I 10; EB & WB carry?

About 777 vehicles per day (2022 count), of which roughly 2% are trucks.

How long is Redrock RD over I 10; EB & WB?

The structure is 162 ft (49.4 m) long with a longest span of 79 ft (24.1 m) and a deck 31 ft wide.

Who owns Redrock RD over I 10; EB & WB?

It is owned by the State Highway Agency.