US Bridges

NM-187 over Rio Grande

Fair

Dona Ana County, New Mexico · 2.23 MI N of JCT NM-26 · Structure no. 000000000009131

Built
2000
25 years old
Condition
Fair
inspected December 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
604 ft
6 main spans
Daily traffic
2,124
2023 count
Owner
State
State Highway Agency

About this bridge

NM-187 over Rio Grande is a prestressed concrete continuous stringer/multi-beam or girder carrying NM-187 over Rio Grande in Dona Ana County, New Mexico. It was built in 2000, so it is 25 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 604 ft (184.1 m) long and 34 ft wide. If it were closed, the detour would be 18 mi (29 km).

Location

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CarriesNM-187
CrossesRio Grande
Location2.23 MI N of JCT NM-26
RouteState Highway 187
CountyDona Ana County
StateNew Mexico
Coordinates32.68333, -107.18967
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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionDecember 2024
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 geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating59.4 US tons
Inventory rating34.2 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans6
Design loadHS 20
Structure length604 ft (184.1 m)
Longest span100 ft (30.5 m)
Deck width34 ft (10.5 m)
Roadway width31 ft (9.6 m)
Vertical clearance over deckUnrestricted

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 closed18 mi (29 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 Rio Grande built?

It was built in 2000, making it 25 years old in 2025.

What condition is NM-187 over Rio Grande 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 2024.

How much traffic does NM-187 over Rio Grande carry?

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

How long is NM-187 over Rio Grande?

The structure is 604 ft (184.1 m) long with a longest span of 100 ft (30.5 m) and a deck 34 ft wide.

Who owns NM-187 over Rio Grande?

It is owned by the State Highway Agency.