US Bridges

IRR BIA RTE N7140 over Defiance Wash

Fair

McKinley County, New Mexico · 14 MI SW of Gallup Nm · Structure no. 00000000000N479

Built
1973
52 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
52 ft
5 main spans
Daily traffic
178
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE N7140 over Defiance Wash is a concrete continuous culvert carrying IRR BIA RTE N7140 over Defiance Wash in McKinley County, New Mexico. It was built in 1973, so it is 52 years old, older than the New Mexico average of 51.5 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 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 178 vehicles a day, roughly 5% of them trucks, projected to reach 208 by 2043. The structure is 52 ft (15.8 m) long and 52 ft wide. If it were closed, the detour would be 21.7 mi (35 km).

Location

Open in Google Maps
CarriesIRR BIA RTE N7140
CrossesDefiance Wash
Location14 MI SW of Gallup Nm
RouteFederal Lands Road N7140
CountyMcKinley County
StateNew Mexico
Coordinates35.43478, -108.95892
Functional classRural Minor 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
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy4: Meets minimum tolerable limits to be left in place as is
Approach roadway alignment6: Equal to present minimum criteria
Operating rating49.1 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans5
Design loadHS 20
Structure length52 ft (15.8 m)
Longest span10 ft (3.1 m)
Deck width52 ft (15.8 m)
Roadway width30 ft (9.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic178 (2023)
Projected traffic208 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed21.7 mi (35 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 N7140 over Defiance Wash built?

It was built in 1973, making it 52 years old in 2025.

What condition is IRR BIA RTE N7140 over Defiance 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 March 2023.

How much traffic does IRR BIA RTE N7140 over Defiance Wash carry?

About 178 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is IRR BIA RTE N7140 over Defiance Wash?

The structure is 52 ft (15.8 m) long with a longest span of 10 ft (3.1 m) and a deck 52 ft wide.

Who owns IRR BIA RTE N7140 over Defiance Wash?

It is owned by the Bureau of Indian Affairs.