US Bridges

IRR BIA RTE N543 over Slick Rock Wash

Fair

McKinley County, New Mexico · 0.2 MI N Pigeon Springs · Structure no. 00000000000N678

Built
1990
35 years old
Condition
Fair
inspected March 2023
Type
Culvert
Concrete Continuous
Length
21 ft
2 main spans
Daily traffic
531
2023 count
Owner
Federal
Bureau of Indian Affairs

About this bridge

IRR BIA RTE N543 over Slick Rock Wash is a concrete continuous culvert carrying IRR BIA RTE N543 over Slick Rock Wash in McKinley County, New Mexico. It was built in 1990, so it is 35 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 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 531 vehicles a day, roughly 5% of them trucks, projected to reach 621 by 2040. The structure is 21 ft (6.3 m) long and 46 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

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CarriesIRR BIA RTE N543
CrossesSlick Rock Wash
Location0.2 MI N Pigeon Springs
RouteFederal Lands Road 0N543
CountyMcKinley County
StateNew Mexico
Coordinates35.72878, -109.03311
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 protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; action required to protect exposed foundations
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete Continuous
DeckNot applicable
Main spans2
Design loadHS 20
Structure length21 ft (6.3 m)
Longest span10 ft (3 m)
Deck width46 ft (14 m)
Roadway width22 ft (6.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic531 (2023)
Projected traffic621 by 2040
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 N543 over Slick Rock Wash built?

It was built in 1990, making it 35 years old in 2025.

What condition is IRR BIA RTE N543 over Slick Rock 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 N543 over Slick Rock Wash carry?

About 531 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is IRR BIA RTE N543 over Slick Rock Wash?

The structure is 21 ft (6.3 m) long with a longest span of 10 ft (3 m) and a deck 46 ft wide.

Who owns IRR BIA RTE N543 over Slick Rock Wash?

It is owned by the Bureau of Indian Affairs.