US Bridges

I-40 Ebl/Wbl over Six Mile Canyon

Fair

McKinley County, New Mexico · 16.9 MI E of JCT US-491 · Structure no. 000000000006005

Built
1957
68 years old
Condition
Fair
inspected November 2024
Type
Culvert
Concrete
Length
43 ft
4 main spans
Daily traffic
24,898
2023 count
Owner
State
State Highway Agency

About this bridge

I-40 Ebl/Wbl over Six Mile Canyon is a concrete culvert carrying I-40 Ebl/Wbl over Six Mile Canyon in McKinley County, New Mexico. It was built in 1957, so it is 68 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 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 24,898 vehicles a day, roughly 45% of them trucks, projected to reach 33,861 by 2043. The structure is 43 ft (13.1 m) long.

Location

Open in Google Maps
CarriesI-40 Ebl/Wbl
CrossesSix Mile Canyon
Location16.9 MI E of JCT US-491
RouteInterstate 40
CountyMcKinley County
StateNew Mexico
Coordinates35.48491, -108.45749
Functional classRural Principal Arterial - Interstate

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionNovember 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans4
Design loadHS 20
Structure length43 ft (13.1 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic24,898 (2023)
Projected traffic33,861 by 2043
Trucks45%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$470,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was I-40 Ebl/Wbl over Six Mile Canyon built?

It was built in 1957, making it 68 years old in 2025.

What condition is I-40 Ebl/Wbl over Six Mile Canyon 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 November 2024.

How much traffic does I-40 Ebl/Wbl over Six Mile Canyon carry?

About 24,898 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-40 Ebl/Wbl over Six Mile Canyon?

The structure is 43 ft (13.1 m) long with a longest span of 10 ft (3 m).

Who owns I-40 Ebl/Wbl over Six Mile Canyon?

It is owned by the State Highway Agency.