US Bridges

NM-601 over Unnamed Waterway

Fair

Catron County, New Mexico · 6.9 MI NW of US-60 · Structure no. 000000000003421

Built
1968
57 years old
Condition
Fair
inspected April 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
52 ft
2 main spans
Daily traffic
72
2023 count
Owner
State
State Highway Agency

About this bridge

NM-601 over Unnamed Waterway is a wood or timber stringer/multi-beam or girder carrying NM-601 over Unnamed Waterway in Catron County, New Mexico. It was built in 1968, so it is 57 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 72 vehicles a day, roughly 9% of them trucks, projected to reach 97 by 2043. The structure is 52 ft (15.8 m) long and 30 ft wide. If it were closed, the detour would be 55.3 mi (89 km).

CarriesNM-601
CrossesUnnamed Waterway
Location6.9 MI NW of US-60
RouteState Highway 601
Coordinates34.38892, -108.6052
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionApril 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourScour critical; foundations unstable for calculated scour conditions
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating35.7 US tons
Inventory rating25 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadH 15
Structure length52 ft (15.8 m)
Longest span25 ft (7.6 m)
Deck width30 ft (9.1 m)
Roadway width29 ft (8.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic72 (2023)
Projected traffic97 by 2043
Trucks9%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed55.3 mi (89 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$2.7 million (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was NM-601 over Unnamed Waterway built?

It was built in 1968, making it 57 years old in 2025.

What condition is NM-601 over Unnamed Waterway 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 April 2024.

How much traffic does NM-601 over Unnamed Waterway carry?

About 72 vehicles per day (2023 count), of which roughly 9% are trucks.

How long is NM-601 over Unnamed Waterway?

The structure is 52 ft (15.8 m) long with a longest span of 25 ft (7.6 m) and a deck 30 ft wide.

Who owns NM-601 over Unnamed Waterway?

It is owned by the State Highway Agency.