US Bridges

I 10; Frontage RD over Wash

Good

Pima County, Arizona · 23.6 MI South JCT SR 84 · Structure no. 06067

Built
1931
94 years old
Condition
Good
inspected August 2022
Type
Culvert
Concrete Continuous
Length
54 ft
5 main spans
Daily traffic
220
2021 count
Owner
State
State Highway Agency

About this bridge

I 10; Frontage RD over Wash is a concrete continuous culvert carrying I 10; Frontage RD over Wash in Pima County, Arizona. It was built in 1931, so it is 94 years old, older 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 220 vehicles a day, roughly 5% of them trucks, projected to reach 230 by 2041. The structure is 54 ft (16.5 m) long and 33 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

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CarriesI 10; Frontage RD
CrossesWash
Location23.6 MI South JCT SR 84
RouteState Highway 10
CountyPima County
StateArizona
Coordinates32.4792, -111.2393
Functional classRural Major Collector

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 inspectionAugust 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating57 US tons
Inventory rating35.1 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span10 ft (3 m)
Deck width33 ft (10.2 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic220 (2021)
Projected traffic230 by 2041
Trucks5%
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

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 I 10; Frontage RD over Wash built?

It was built in 1931, making it 94 years old in 2025.

What condition is I 10; Frontage RD 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 August 2022.

How much traffic does I 10; Frontage RD over Wash carry?

About 220 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is I 10; Frontage RD over Wash?

The structure is 54 ft (16.5 m) long with a longest span of 10 ft (3 m) and a deck 33 ft wide.

Who owns I 10; Frontage RD over Wash?

It is owned by the State Highway Agency.