US Bridges

IRR BIA RTE 47 over Encinal Wash

Good

Cibola County, New Mexico · 2.1 KM South of Encinal · Structure no. 00000000000M119

Built
1963
62 years old
Condition
Good
inspected April 2023
Type
Culvert
Concrete
Length
31 ft
2 main spans
Daily traffic
320
2021 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE 47 over Encinal Wash is a concrete culvert carrying IRR BIA RTE 47 over Encinal Wash in Cibola County, New Mexico. It was built in 1963, so it is 62 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 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 320 vehicles a day, roughly 5% of them trucks, projected to reach 374 by 2041. The structure is 31 ft (9.4 m) long and 34 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

CarriesIRR BIA RTE 47
CrossesEncinal Wash
Location2.1 KM South of Encinal
RouteFederal Lands Road 47
Coordinates35.09973, -107.46476
Functional classRural Minor Arterial

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 inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating36.3 US tons
Inventory rating26.5 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans2
Design loadHS 15
Structure length31 ft (9.4 m)
Longest span10 ft (3 m)
Deck width34 ft (10.3 m)
Roadway width31 ft (9.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic320 (2021)
Projected traffic374 by 2041
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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 47 over Encinal Wash built?

It was built in 1963, making it 62 years old in 2025.

What condition is IRR BIA RTE 47 over Encinal 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 April 2023.

How much traffic does IRR BIA RTE 47 over Encinal Wash carry?

About 320 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is IRR BIA RTE 47 over Encinal Wash?

The structure is 31 ft (9.4 m) long with a longest span of 10 ft (3 m) and a deck 34 ft wide.

Who owns IRR BIA RTE 47 over Encinal Wash?

It is owned by the Bureau of Indian Affairs.