US Bridges

IRR Maricopa RD over Smith Wash Rcb

Good

Pinal County, Arizona · 9.65 MI N of JCT SR 84 · Structure no. 06908

Built
1987
38 years old, rebuilt 1992
Condition
Good
inspected April 2022
Type
Culvert
Concrete Continuous
Length
65 ft
6 main spans
Daily traffic
6,544
2020 count
Owner
State
State Highway Agency

About this bridge

IRR Maricopa RD over Smith Wash Rcb is a concrete continuous culvert carrying IRR Maricopa RD over Smith Wash Rcb in Pinal County, Arizona. It was built in 1987 and reconstructed in 1992, so it is 38 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 6,544 vehicles a day, roughly 18% of them trucks, projected to reach 19,632 by 2040. The structure is 65 ft (19.8 m) long. If it were closed, the detour would be 3.7 mi (6 km).

Location

Open in Google Maps
CarriesIRR Maricopa RD
CrossesSmith Wash Rcb
Location9.65 MI N of JCT SR 84
RouteState Highway 347
CountyPinal County
StateArizona
Coordinates33.0146, -112.0479
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionApril 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans6
Design loadHS 20
Structure length65 ft (19.8 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic6,544 (2020)
Projected traffic19,632 by 2040
Trucks18%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR Maricopa RD over Smith Wash Rcb built?

It was built in 1987, making it 38 years old in 2025. It was reconstructed in 1992.

What condition is IRR Maricopa RD over Smith Wash Rcb 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 April 2022.

How much traffic does IRR Maricopa RD over Smith Wash Rcb carry?

About 6,544 vehicles per day (2020 count), of which roughly 18% are trucks.

How long is IRR Maricopa RD over Smith Wash Rcb?

The structure is 65 ft (19.8 m) long with a longest span of 10 ft (3 m).

Who owns IRR Maricopa RD over Smith Wash Rcb?

It is owned by the State Highway Agency.