US Bridges

IRR BIA RTE N3005 over Coal Wash

Fair

San Juan County, New Mexico · 8.6M S 13M W Farmington · Structure no. 00000000000N815

Built
1978
47 years old
Condition
Fair
inspected March 2023
Type
Culvert
Steel
Length
34 ft
1 main span
Daily traffic
841
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE N3005 over Coal Wash is a steel culvert carrying IRR BIA RTE N3005 over Coal Wash in San Juan County, New Mexico. It was built in 1978, so it is 47 years old, younger 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 841 vehicles a day, roughly 7% of them trucks, projected to reach 3,363 by 2043. The structure is 34 ft (10.5 m) long and 138 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesIRR BIA RTE N3005
CrossesCoal Wash
Location8.6M S 13M W Farmington
RouteFederal Lands Road 3005
CountySan Juan County
StateNew Mexico
Coordinates36.60997, -108.43175
Functional classRural Minor Arterial

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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, 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; action required to protect exposed foundations
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating110.1 US tons
Inventory rating110.1 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans1
Design loadUnknown
Structure length34 ft (10.5 m)
Longest span34 ft (10.5 m)
Deck width138 ft (42 m)
Roadway width35 ft (10.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic841 (2023)
Projected traffic3,363 by 2043
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$75,000 (2023 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was IRR BIA RTE N3005 over Coal Wash built?

It was built in 1978, making it 47 years old in 2025.

What condition is IRR BIA RTE N3005 over Coal 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 N3005 over Coal Wash carry?

About 841 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is IRR BIA RTE N3005 over Coal Wash?

The structure is 34 ft (10.5 m) long with a longest span of 34 ft (10.5 m) and a deck 138 ft wide.

Who owns IRR BIA RTE N3005 over Coal Wash?

It is owned by the Bureau of Indian Affairs.