US Bridges

Old SB40 (rte 66) over Wash

Good

Mohave County, Arizona · 0.5 MI E JCT I-40 · Structure no. 10304

Built
1940
85 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete Continuous
Length
32 ft
3 main spans
Daily traffic
10,576
2019 count
Owner
City
City or Municipal Highway Agency

About this bridge

Old SB40 (rte 66) over Wash is a concrete continuous culvert carrying Old SB40 (rte 66) over Wash in Mohave County, Arizona. It was built in 1940, so it is 85 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 10,576 vehicles a day, roughly 4% of them trucks, projected to reach 10,586 by 2039. The structure is 32 ft (9.8 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesOld SB40 (rte 66)
CrossesWash
Location0.5 MI E JCT I-40
RouteCity Street 0
CountyMohave County
StateArizona
Coordinates35.1898, -114.0595
Functional classUrban Other Principal Arterial

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 2023
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 alignment6: Equal to present minimum criteria
Operating rating99 US tons
Inventory rating84 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans3
Design loadH 15
Structure length32 ft (9.8 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 traffic10,576 (2019)
Projected traffic10,586 by 2039
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCity or Municipal Highway Agency
Maintained byCity or Municipal 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 Old SB40 (rte 66) over Wash built?

It was built in 1940, making it 85 years old in 2025.

What condition is Old SB40 (rte 66) 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 2023.

How much traffic does Old SB40 (rte 66) over Wash carry?

About 10,576 vehicles per day (2019 count), of which roughly 4% are trucks.

How long is Old SB40 (rte 66) over Wash?

The structure is 32 ft (9.8 m) long with a longest span of 10 ft (3 m).

Who owns Old SB40 (rte 66) over Wash?

It is owned by the City or Municipal Highway Agency.