US Bridges

IRR SR 66 EB over Wash

Fair

Mohave County, Arizona · 3.7 MI E JCT I 40 · Structure no. 04211

Built
1968
57 years old
Condition
Fair
inspected December 2022
Type
Culvert
Concrete Continuous
Length
86 ft
8 main spans
Daily traffic
7,650
2013 count
Owner
State
State Highway Agency

About this bridge

IRR SR 66 EB over Wash is a concrete continuous culvert carrying IRR SR 66 EB over Wash in Mohave County, Arizona. It was built in 1968, so it is 57 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 6 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 7,650 vehicles a day, roughly 26% of them trucks, projected to reach 7,660 by 2033. The structure is 86 ft (26.2 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesIRR SR 66 EB
CrossesWash
Location3.7 MI E JCT I 40
RouteState Highway 66
CountyMohave County
StateArizona
Coordinates35.25908, -113.97133
Functional classUrban Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating69 US tons
Inventory rating41 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans8
Design loadHS 20
Structure length86 ft (26.2 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 traffic7,650 (2013)
Projected traffic7,660 by 2033
Trucks26%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 SR 66 EB over Wash built?

It was built in 1968, making it 57 years old in 2025.

What condition is IRR SR 66 EB over Wash 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 2022.

How much traffic does IRR SR 66 EB over Wash carry?

About 7,650 vehicles per day (2013 count), of which roughly 26% are trucks.

How long is IRR SR 66 EB over Wash?

The structure is 86 ft (26.2 m) long with a longest span of 10 ft (3 m).

Who owns IRR SR 66 EB over Wash?

It is owned by the State Highway Agency.