US Bridges

NM-185 over Unnamed Waterway

Good

Dona Ana County, New Mexico · 13.0 MI of NM-157 · Structure no. 000000000009452

Built
2008
17 years old
Condition
Good
inspected June 2024
Type
Culvert
Concrete
Length
37 ft
5 main spans
Daily traffic
847
2023 count
Owner
State
State Highway Agency

About this bridge

NM-185 over Unnamed Waterway is a concrete culvert carrying NM-185 over Unnamed Waterway in Dona Ana County, New Mexico. It was built in 2008, so it is 17 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 847 vehicles a day, roughly 11% of them trucks, projected to reach 1,151 by 2043. The structure is 37 ft (11.3 m) long. If it were closed, the detour would be 37.9 mi (61 km).

CarriesNM-185
CrossesUnnamed Waterway
Location13.0 MI of NM-157
RouteState Highway 185
Coordinates32.61931, -107.0299
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy6: Equal to present minimum 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 spans5
Design loadHL 93
Structure length37 ft (11.3 m)
Longest span8 ft (2.4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic847 (2023)
Projected traffic1,151 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed37.9 mi (61 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-185 over Unnamed Waterway built?

It was built in 2008, making it 17 years old in 2025.

What condition is NM-185 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 2024.

How much traffic does NM-185 over Unnamed Waterway carry?

About 847 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-185 over Unnamed Waterway?

The structure is 37 ft (11.3 m) long with a longest span of 8 ft (2.4 m).

Who owns NM-185 over Unnamed Waterway?

It is owned by the State Highway Agency.