US Bridges

NM-24 over Unnamed Waterway

Good

Chaves County, New Mexico · 2.7 MI S of US-82/DUNKEN · Structure no. 000000000005721

Built
1955
70 years old
Condition
Good
inspected June 2023
Type
Channel Beam
Concrete
Length
77 ft
3 main spans
Daily traffic
80
2023 count
Owner
State
State Highway Agency

About this bridge

NM-24 over Unnamed Waterway is a concrete channel beam carrying NM-24 over Unnamed Waterway in Chaves County, New Mexico. It was built in 1955, so it is 70 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 80 vehicles a day, roughly 11% of them trucks, projected to reach 108 by 2043. The structure is 77 ft (23.5 m) long and 24 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesNM-24
CrossesUnnamed Waterway
Location2.7 MI S of US-82/DUNKEN
RouteState Highway 24
Coordinates32.85108, -105.1913
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating48 US tons
Inventory rating28.7 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckOther
Main spans3
Design loadHS 15
Structure length77 ft (23.5 m)
Longest span25 ft (7.6 m)
Deck width24 ft (7.3 m)
Roadway width23 ft (6.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic80 (2023)
Projected traffic108 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 statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$124,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-24 over Unnamed Waterway built?

It was built in 1955, making it 70 years old in 2025.

What condition is NM-24 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 June 2023.

How much traffic does NM-24 over Unnamed Waterway carry?

About 80 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-24 over Unnamed Waterway?

The structure is 77 ft (23.5 m) long with a longest span of 25 ft (7.6 m) and a deck 24 ft wide.

Who owns NM-24 over Unnamed Waterway?

It is owned by the State Highway Agency.