US Bridges

NM-187 over North Kelly Canyon

Fair

Sierra County, New Mexico · 4.9 M N of NM-152 · Structure no. 000000000002505

Built
1933
92 years old
Condition
Fair
inspected December 2023
Type
Culvert
Concrete
Length
25 ft
3 main spans
Daily traffic
521
2023 count
Owner
State
State Highway Agency

About this bridge

NM-187 over North Kelly Canyon is a concrete culvert carrying NM-187 over North Kelly Canyon in Sierra County, New Mexico. It was built in 1933, so it is 92 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 521 vehicles a day, roughly 12% of them trucks, projected to reach 708 by 2043. The structure is 25 ft (7.7 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNM-187
CrossesNorth Kelly Canyon
Location4.9 M N of NM-152
RouteState Highway 187
Coordinates33.0173, -107.31267
Functional classRural Major Collector

Condition and inspection

Fair

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

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating100 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadH 15
Structure length25 ft (7.7 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 traffic521 (2023)
Projected traffic708 by 2043
Trucks12%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 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—
NavigationNo navigation control on waterway

Frequently asked questions

When was NM-187 over North Kelly Canyon built?

It was built in 1933, making it 92 years old in 2025.

What condition is NM-187 over North Kelly Canyon 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 December 2023.

How much traffic does NM-187 over North Kelly Canyon carry?

About 521 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is NM-187 over North Kelly Canyon?

The structure is 25 ft (7.7 m) long with a longest span of 8 ft (2.4 m).

Who owns NM-187 over North Kelly Canyon?

It is owned by the State Highway Agency.