US Bridges

US-64 over Unnamed Waterway

Good

Colfax County, New Mexico · 4.2 MI E of JCT NM-21 · Structure no. 000000000003078

Built
1938
87 years old, rebuilt 1971
Condition
Good
inspected February 2022
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
544
2023 count
Owner
State
State Highway Agency

About this bridge

US-64 over Unnamed Waterway is a concrete culvert carrying US-64 over Unnamed Waterway in Colfax County, New Mexico. It was built in 1938 and reconstructed in 1971, so it is 87 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 544 vehicles a day, roughly 11% of them trucks, projected to reach 739 by 2043. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 11.2 mi (18 km).

CarriesUS-64
CrossesUnnamed Waterway
Location4.2 MI E of JCT NM-21
RouteU.S. Route 64
Coordinates36.53323, -104.85236
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 inspectionFebruary 2022
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 rating62.5 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadH 15
Structure length22 ft (6.7 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 traffic544 (2023)
Projected traffic739 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed11.2 mi (18 km)
TollOn a free road
National Highway SystemNo
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-64 over Unnamed Waterway built?

It was built in 1938, making it 87 years old in 2025. It was reconstructed in 1971.

What condition is US-64 over Unnamed Waterway 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 February 2022.

How much traffic does US-64 over Unnamed Waterway carry?

About 544 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US-64 over Unnamed Waterway?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns US-64 over Unnamed Waterway?

It is owned by the State Highway Agency.