US Bridges

US-84 over Arroyo Canjilon

Fair

Rio Arriba County, New Mexico · 6.55 MI N JCT NM-96/US-84 · Structure no. 000000000006244

Built
1960
65 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
181 ft
3 main spans
Daily traffic
2,008
2023 count
Owner
State
State Highway Agency

About this bridge

US-84 over Arroyo Canjilon is a prestressed concrete stringer/multi-beam or girder carrying US-84 over Arroyo Canjilon in Rio Arriba County, New Mexico. It was built in 1960, so it is 65 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 5 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 2,008 vehicles a day, roughly 11% of them trucks, projected to reach 2,730 by 2043. The structure is 181 ft (55.2 m) long and 31 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesUS-84
CrossesArroyo Canjilon
Location6.55 MI N JCT NM-96/US-84
RouteU.S. Route 84
CountyRio Arriba County
StateNew Mexico
Coordinates36.3149, -106.48556
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
Deck7 GoodSome minor problems.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.7 US tons
Inventory rating43.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length181 ft (55.2 m)
Longest span59 ft (18 m)
Deck width31 ft (9.6 m)
Roadway width28 ft (8.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic2,008 (2023)
Projected traffic2,730 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusPossibly eligible for the National Register; requires further investigation
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$970,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-84 over Arroyo Canjilon built?

It was built in 1960, making it 65 years old in 2025.

What condition is US-84 over Arroyo Canjilon 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 September 2023.

How much traffic does US-84 over Arroyo Canjilon carry?

About 2,008 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US-84 over Arroyo Canjilon?

The structure is 181 ft (55.2 m) long with a longest span of 59 ft (18 m) and a deck 31 ft wide.

Who owns US-84 over Arroyo Canjilon?

It is owned by the State Highway Agency.