US Bridges

Oatman Road over Small Wash

Good

Mohave County, Arizona · 15.4 MI W of I 40 · Structure no. 08782

Built
1984
41 years old
Condition
Good
inspected September 2021
Type
Culvert
Concrete Continuous
Length
25 ft
2 main spans
Daily traffic
150
2017 count
Owner
County
County Highway Agency

About this bridge

Oatman Road over Small Wash is a concrete continuous culvert carrying Oatman Road over Small Wash in Mohave County, Arizona. It was built in 1984, so it is 41 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 150 vehicles a day, roughly 1% of them trucks, projected to reach 160 by 2037. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesOatman Road
CrossesSmall Wash
Location15.4 MI W of I 40
RouteCounty Highway 0
StateArizona
Coordinates35.0325, -114.3237
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 inspectionSeptember 2021
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 rating72 US tons
Inventory rating43 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span12 ft (3.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2017)
Projected traffic160 by 2037
Trucks1%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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 Oatman Road over Small Wash built?

It was built in 1984, making it 41 years old in 2025.

What condition is Oatman Road over Small 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 September 2021.

How much traffic does Oatman Road over Small Wash carry?

About 150 vehicles per day (2017 count), of which roughly 1% are trucks.

How long is Oatman Road over Small Wash?

The structure is 25 ft (7.6 m) long with a longest span of 12 ft (3.7 m).

Who owns Oatman Road over Small Wash?

It is owned by the County Highway Agency.