US Bridges

NM-102 over Unnamed Waterway

Good

Harding County, New Mexico · 21.9 MI NE of NM-39 · Structure no. 000000000006985

Built
1967
58 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete
Length
33 ft
3 main spans
Daily traffic
49
2023 count
Owner
State
State Highway Agency

About this bridge

NM-102 over Unnamed Waterway is a concrete culvert carrying NM-102 over Unnamed Waterway in Harding County, New Mexico. It was built in 1967, so it is 58 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 49 vehicles a day, roughly 12% of them trucks, projected to reach 66 by 2043. The structure is 33 ft (10.1 m) long. If it were closed, the detour would be 26.7 mi (43 km).

CarriesNM-102
CrossesUnnamed Waterway
Location21.9 MI NE of NM-39
RouteState Highway 102
Coordinates35.99891, -103.63851
Functional classRural Minor 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 inspectionJanuary 2025
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 rating41.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length33 ft (10.1 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 traffic49 (2023)
Projected traffic66 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed26.7 mi (43 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-102 over Unnamed Waterway built?

It was built in 1967, making it 58 years old in 2025.

What condition is NM-102 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 January 2025.

How much traffic does NM-102 over Unnamed Waterway carry?

About 49 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is NM-102 over Unnamed Waterway?

The structure is 33 ft (10.1 m) long with a longest span of 10 ft (3 m).

Who owns NM-102 over Unnamed Waterway?

It is owned by the State Highway Agency.