US Bridges

NM-554 over Unnamed Waterway

Good

Rio Arriba County, New Mexico · 0.64 MI NE of US-84 · Structure no. 000000000002993

Built
1942
83 years old, rebuilt 1990
Condition
Good
inspected July 2021
Type
Culvert
Concrete
Length
76 ft
8 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 1942 and reconstructed in 1990, so it is 83 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 1,165 vehicles a day, roughly 11% of them trucks, projected to reach 1,584 by 2043. The structure is 76 ft (23.3 m) long. If it were closed, the detour would be 60.3 mi (97 km).

CarriesNM-554
CrossesUnnamed Waterway
Location0.64 MI NE of US-84
RouteState Highway 554
Coordinates36.21699, -106.24693
Functional classRural Major Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2021
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating71.4 US tons
Inventory rating42.9 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans8
Design loadH 15
Structure length76 ft (23.3 m)
Longest span6 ft (1.8 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 closed60.3 mi (97 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 1942, making it 83 years old in 2025. It was reconstructed in 1990.

What condition is NM-554 over Unnamed Waterway 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 July 2021.

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 76 ft (23.3 m) long with a longest span of 6 ft (1.8 m).

Who owns NM-554 over Unnamed Waterway?

It is owned by the State Highway Agency.