US Bridges

NM-68 over Arroyo Del Palacio

Good

Rio Arriba County, New Mexico · 8.30 MI N of US-285 · Structure no. 000000000006492

Built
1966
59 years old
Condition
Good
inspected October 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
133 ft
3 main spans
Daily traffic
8,938
2023 count
Owner
State
State Highway Agency

About this bridge

NM-68 over Arroyo Del Palacio is a steel continuous stringer/multi-beam or girder carrying NM-68 over Arroyo Del Palacio in Rio Arriba County, New Mexico. It was built in 1966, so it is 59 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 8,938 vehicles a day, roughly 17% of them trucks, projected to reach 12,155 by 2043. The structure is 133 ft (40.5 m) long and 47 ft wide. If it were closed, the detour would be 1.2 mi (2 km).

CarriesNM-68
CrossesArroyo Del Palacio
Location8.30 MI N of US-285
RouteState Highway 68
Coordinates36.10418, -106.03443
Functional classUrban Other Principal Arterial

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating54.2 US tons
Inventory rating32.4 US tons

Structure

MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length133 ft (40.5 m)
Longest span51 ft (15.5 m)
Deck width47 ft (14.3 m)
Roadway width45 ft (13.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,938 (2023)
Projected traffic12,155 by 2043
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NM-68 over Arroyo Del Palacio built?

It was built in 1966, making it 59 years old in 2025.

What condition is NM-68 over Arroyo Del Palacio in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in October 2024.

How much traffic does NM-68 over Arroyo Del Palacio carry?

About 8,938 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is NM-68 over Arroyo Del Palacio?

The structure is 133 ft (40.5 m) long with a longest span of 51 ft (15.5 m) and a deck 47 ft wide.

Who owns NM-68 over Arroyo Del Palacio?

It is owned by the State Highway Agency.