US Bridges

NM-187 over Placitas Arroyo

Fair

Dona Ana County, New Mexico · 0.7 MI N of NM-26 · Structure no. 000000000009447

Built
2009
16 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete Continuous
Length
169 ft
6 main spans
Daily traffic
2,124
2023 count
Owner
State
State Highway Agency

About this bridge

NM-187 over Placitas Arroyo is a concrete continuous slab carrying NM-187 over Placitas Arroyo in Dona Ana County, New Mexico. It was built in 2009, so it is 16 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 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 2,124 vehicles a day, roughly 11% of them trucks, projected to reach 2,888 by 2043. The structure is 169 ft (51.4 m) long and 35 ft wide. If it were closed, the detour would be 5 mi (8 km).

Location

Open in Google Maps
CarriesNM-187
CrossesPlacitas Arroyo
Location0.7 MI N of NM-26
RouteState Highway 187
CountyDona Ana County
StateNew Mexico
Coordinates32.67034, -107.16956
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating81.7 US tons
Inventory rating48.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHL 93
Structure length169 ft (51.4 m)
Longest span29 ft (8.8 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic2,124 (2023)
Projected traffic2,888 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed5 mi (8 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-187 over Placitas Arroyo built?

It was built in 2009, making it 16 years old in 2025.

What condition is NM-187 over Placitas Arroyo 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 August 2023.

How much traffic does NM-187 over Placitas Arroyo carry?

About 2,124 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-187 over Placitas Arroyo?

The structure is 169 ft (51.4 m) long with a longest span of 29 ft (8.8 m) and a deck 35 ft wide.

Who owns NM-187 over Placitas Arroyo?

It is owned by the State Highway Agency.