US Bridges

NM-612 over Cottonwood Creek

Good

McKinley County, New Mexico · 4.6 MI S of JCT I-40 · Structure no. 000000000010027

Built
1991
34 years old
Condition
Good
inspected September 2021
Type
Culvert
Steel
Length
30 ft
3 main spans
Daily traffic
626
2023 count
Owner
State
State Highway Agency

About this bridge

NM-612 over Cottonwood Creek is a steel culvert carrying NM-612 over Cottonwood Creek in McKinley County, New Mexico. It was built in 1991, so it is 34 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 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 626 vehicles a day, roughly 11% of them trucks, projected to reach 851 by 2043. The structure is 30 ft (9 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesNM-612
CrossesCottonwood Creek
Location4.6 MI S of JCT I-40
RouteState Highway 612
Coordinates35.34214, -108.21273
Functional classRural Major Collector

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 inspectionSeptember 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length30 ft (9 m)
Longest span9 ft (2.6 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic626 (2023)
Projected traffic851 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
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 NM-612 over Cottonwood Creek built?

It was built in 1991, making it 34 years old in 2025.

What condition is NM-612 over Cottonwood Creek 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 September 2021.

How much traffic does NM-612 over Cottonwood Creek carry?

About 626 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-612 over Cottonwood Creek?

The structure is 30 ft (9 m) long with a longest span of 9 ft (2.6 m).

Who owns NM-612 over Cottonwood Creek?

It is owned by the State Highway Agency.