US Bridges

IRR BIA RTE 101 over Railroad Wash

Fair

Mohave County, Arizona · 0.3 KM South of US HWY 66 · Structure no. 00000000000H231

Built
1972
53 years old
Condition
Fair
inspected December 2024
Type
Slab
Concrete Continuous
Length
82 ft
3 main spans
Daily traffic
350
2024 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 101 over Railroad Wash is a concrete continuous slab carrying IRR BIA RTE 101 over Railroad Wash in Mohave County, Arizona. It was built in 1972, so it is 53 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 350 vehicles a day, roughly 5% of them trucks, projected to reach 420 by 2044. The structure is 82 ft (25 m) long and 31 ft wide. If it were closed, the detour would be 123.7 mi (199 km).

Location

Open in Google Maps
CarriesIRR BIA RTE 101
CrossesRailroad Wash
Location0.3 KM South of US HWY 66
RouteFederal Lands Road 101
CountyMohave County
StateArizona
Coordinates35.52703, -113.42431
Functional classUrban Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.7 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length82 ft (25 m)
Longest span31 ft (9.4 m)
Deck width31 ft (9.5 m)
Roadway width24 ft (7.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic350 (2024)
Projected traffic420 by 2044
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed123.7 mi (199 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 RTE 101 over Railroad Wash built?

It was built in 1972, making it 53 years old in 2025.

What condition is IRR BIA RTE 101 over Railroad 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 2024.

How much traffic does IRR BIA RTE 101 over Railroad Wash carry?

About 350 vehicles per day (2024 count), of which roughly 5% are trucks.

How long is IRR BIA RTE 101 over Railroad Wash?

The structure is 82 ft (25 m) long with a longest span of 31 ft (9.4 m) and a deck 31 ft wide.

Who owns IRR BIA RTE 101 over Railroad Wash?

It is owned by the Bureau of Indian Affairs.