US Bridges

US-84/285 over Rio Grande

Fair

Rio Arriba County, New Mexico · 0.3 MI E of JCT NM30 · Structure no. 000000000007516

Built
1980
45 years old
Condition
Fair
inspected October 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
948 ft
11 main spans
Daily traffic
8,194
2023 count
Owner
State
State Highway Agency

About this bridge

US-84/285 over Rio Grande is a prestressed concrete stringer/multi-beam or girder carrying US-84/285 over Rio Grande in Rio Arriba County, New Mexico. It was built in 1980, so it is 45 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 8,194 vehicles a day, roughly 12% of them trucks, projected to reach 11,143 by 2043. The structure is 948 ft (289 m) long and 72 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

Open in Google Maps
CarriesUS-84/285
CrossesRio Grande
Location0.3 MI E of JCT NM30
RouteU.S. Route 84
CountyRio Arriba County
StateNew Mexico
Coordinates35.98828, -106.07401
Functional classUrban Other Principal 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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2023
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 geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating52.9 US tons
Inventory rating26.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans11
Design loadHS 20
Structure length948 ft (289 m)
Longest span85 ft (25.9 m)
Deck width72 ft (21.9 m)
Roadway width59 ft (18.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,194 (2023)
Projected traffic11,143 by 2043
Trucks12%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$4.5 million (2030 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was US-84/285 over Rio Grande built?

It was built in 1980, making it 45 years old in 2025.

What condition is US-84/285 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 October 2023.

How much traffic does US-84/285 over Rio Grande carry?

About 8,194 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is US-84/285 over Rio Grande?

The structure is 948 ft (289 m) long with a longest span of 85 ft (25.9 m) and a deck 72 ft wide.

Who owns US-84/285 over Rio Grande?

It is owned by the State Highway Agency.