US Bridges

IRR BIA Route 40 over South Moccasin Wash

Good

Mohave County, Arizona · 0.87 · Structure no. 0000H69617B0850

Built
2020
5 years old
Condition
Good
inspected December 2024
Type
Culvert
Steel
Length
26 ft
1 main span
Daily traffic
25
2024 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA Route 40 over South Moccasin Wash is a steel culvert carrying IRR BIA Route 40 over South Moccasin Wash in Mohave County, Arizona. It was built in 2020, so it is 5 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 8 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 25 vehicles a day, projected to reach 40 by 2044. The structure is 26 ft (8 m) long and 140 ft wide. If it were closed, the detour would be 2.5 mi (4 km).

CarriesIRR BIA Route 40
CrossesSouth Moccasin Wash
Location0.87
RouteFederal Lands Road 40
StateArizona
Coordinates36.9013, -112.73467
Functional classRural Local

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.
Culvert8 Very GoodNo problems noted.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation8: Equal to present desirable criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating99 US tons
Inventory rating99 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadHS 15
Structure length26 ft (8 m)
Longest span26 ft (8 m)
Deck width140 ft (42.7 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic25 (2024)
Projected traffic40 by 2044
Trucks0%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed2.5 mi (4 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerBureau of Indian Affairs
Maintained byBureau of Indian Affairs
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 BIA Route 40 over South Moccasin Wash built?

It was built in 2020, making it 5 years old in 2025.

What condition is IRR BIA Route 40 over South Moccasin 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 December 2024.

How much traffic does IRR BIA Route 40 over South Moccasin Wash carry?

About 25 vehicles per day (2024 count).

How long is IRR BIA Route 40 over South Moccasin Wash?

The structure is 26 ft (8 m) long with a longest span of 26 ft (8 m) and a deck 140 ft wide.

Who owns IRR BIA Route 40 over South Moccasin Wash?

It is owned by the Bureau of Indian Affairs.