US Bridges

NM-28 over Rio Grande

Fair

Dona Ana County, New Mexico · 4.0 MI N of JCT NM-192 · Structure no. 000000000008752

Built
1989
36 years old
Condition
Fair
inspected January 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
369 ft
4 main spans
Daily traffic
2,698
2023 count
Owner
State
State Highway Agency

About this bridge

NM-28 over Rio Grande is a prestressed concrete continuous stringer/multi-beam or girder carrying NM-28 over Rio Grande in Dona Ana County, New Mexico. It was built in 1989, so it is 36 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 2,698 vehicles a day, roughly 4% of them trucks, projected to reach 3,669 by 2043. The structure is 369 ft (112.5 m) long and 43 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesNM-28
CrossesRio Grande
Location4.0 MI N of JCT NM-192
RouteState Highway 28
CountyDona Ana County
StateNew Mexico
Coordinates32.20657, -106.75956
Functional classRural Minor Arterial

Condition and inspection

Fair

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

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJanuary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.4 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length369 ft (112.5 m)
Longest span92 ft (28 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,698 (2023)
Projected traffic3,669 by 2043
Trucks4%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 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-28 over Rio Grande built?

It was built in 1989, making it 36 years old in 2025.

What condition is NM-28 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 January 2024.

How much traffic does NM-28 over Rio Grande carry?

About 2,698 vehicles per day (2023 count), of which roughly 4% are trucks.

How long is NM-28 over Rio Grande?

The structure is 369 ft (112.5 m) long with a longest span of 92 ft (28 m) and a deck 43 ft wide.

Who owns NM-28 over Rio Grande?

It is owned by the State Highway Agency.