US Bridges

I 10; Ramp B over Wash

Good

Maricopa County, Arizona · 22.4 MI West of JCT SR 85 · Structure no. 06450

Built
1970
55 years old, rebuilt 1992
Condition
Good
inspected June 2021
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
2,531
2016 count
Owner
State
State Highway Agency

About this bridge

I 10; Ramp B over Wash is a concrete continuous culvert carrying I 10; Ramp B over Wash in Maricopa County, Arizona. It was built in 1970 and reconstructed in 1992, so it is 55 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 2,531 vehicles a day, roughly 24% of them trucks, projected to reach 2,541 by 2036. The structure is 21 ft (6.4 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

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CarriesI 10; Ramp B
CrossesWash
Location22.4 MI West of JCT SR 85
RouteInterstate 10
CountyMaricopa County
StateArizona
Coordinates33.495, -112.926
Functional classRural Principal Arterial - Interstate

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 protection8 Very GoodNo problems noted.
Culvert7 GoodSome minor problems.
Last inspectionJune 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum 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 spans2
Design loadHS 20
Structure length21 ft (6.4 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 traffic2,531 (2016)
Projected traffic2,541 by 2036
Trucks24%
Lanes on structure1
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

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; Ramp B over Wash built?

It was built in 1970, making it 55 years old in 2025. It was reconstructed in 1992.

What condition is I 10; Ramp B 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 June 2021.

How much traffic does I 10; Ramp B over Wash carry?

About 2,531 vehicles per day (2016 count), of which roughly 24% are trucks.

How long is I 10; Ramp B over Wash?

The structure is 21 ft (6.4 m) long with a longest span of 10 ft (3 m).

Who owns I 10; Ramp B over Wash?

It is owned by the State Highway Agency.