US Bridges

SR 347; Maricopa R over Wash

Good

Pinal County, Arizona · 14.85 MI N of JCT SR 84 · Structure no. 06905

Built
1992
33 years old
Condition
Good
inspected April 2022
Type
Culvert
Concrete Continuous
Length
37 ft
3 main spans
Daily traffic
48,896
2020 count
Owner
State
State Highway Agency

About this bridge

SR 347; Maricopa R over Wash is a concrete continuous culvert carrying SR 347; Maricopa R over Wash in Pinal County, Arizona. It was built in 1992, so it is 33 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 48,896 vehicles a day, roughly 9% of them trucks, projected to reach 56,087 by 2040. The structure is 37 ft (11.3 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesSR 347; Maricopa R
CrossesWash
Location14.85 MI N of JCT SR 84
RouteState Highway 347
CountyPinal County
StateArizona
Coordinates33.0879, -112.0362
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 rating82 US tons
Inventory rating49.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadHS 20
Structure length37 ft (11.3 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic48,896 (2020)
Projected traffic56,087 by 2040
Trucks9%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

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 SR 347; Maricopa R over Wash built?

It was built in 1992, making it 33 years old in 2025.

What condition is SR 347; Maricopa R over Wash 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 SR 347; Maricopa R over Wash carry?

About 48,896 vehicles per day (2020 count), of which roughly 9% are trucks.

How long is SR 347; Maricopa R over Wash?

The structure is 37 ft (11.3 m) long with a longest span of 8 ft (2.4 m).

Who owns SR 347; Maricopa R over Wash?

It is owned by the State Highway Agency.