US Bridges

NM-554 over Unnamed Waterway

Fair

Rio Arriba County, New Mexico · 1.50 MI W of JCT NM-111 · Structure no. 000000000006446

Built
1963
62 years old
Condition
Fair
inspected April 2024
Type
Culvert
Concrete
Length
28 ft
2 main spans
Daily traffic
1,165
2023 count
Owner
State
State Highway Agency

About this bridge

NM-554 over Unnamed Waterway is a concrete culvert carrying NM-554 over Unnamed Waterway in Rio Arriba County, New Mexico. It was built in 1963, so it is 62 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 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 1,165 vehicles a day, roughly 11% of them trucks, projected to reach 1,584 by 2043. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 70.8 mi (114 km).

Location

Open in Google Maps
CarriesNM-554
CrossesUnnamed Waterway
Location1.50 MI W of JCT NM-111
RouteState Highway 554
CountyRio Arriba County
StateNew Mexico
Coordinates36.35517, -106.07471
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2024
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating41.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,165 (2023)
Projected traffic1,584 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed70.8 mi (114 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—
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-554 over Unnamed Waterway built?

It was built in 1963, making it 62 years old in 2025.

What condition is NM-554 over Unnamed Waterway 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 April 2024.

How much traffic does NM-554 over Unnamed Waterway carry?

About 1,165 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-554 over Unnamed Waterway?

The structure is 28 ft (8.5 m) long with a longest span of 10 ft (3 m).

Who owns NM-554 over Unnamed Waterway?

It is owned by the State Highway Agency.