US Bridges

NM-555 over Canadian River

Fair

Colfax County, New Mexico · 8.3 MI W of JCT I-25 · Structure no. 000000000008202

Built
1980
45 years old
Condition
Fair
inspected June 2024
Type
Slab
Concrete Continuous
Length
139 ft
4 main spans
Daily traffic
623
2023 count
Owner
State
State Highway Agency

About this bridge

NM-555 over Canadian River is a concrete continuous slab carrying NM-555 over Canadian River in Colfax 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 623 vehicles a day, roughly 11% of them trucks, projected to reach 847 by 2043. The structure is 139 ft (42.4 m) long and 43 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesNM-555
CrossesCanadian River
Location8.3 MI W of JCT I-25
RouteState Highway 555
CountyColfax County
StateNew Mexico
Coordinates36.8897, -104.5673
Functional classRural Minor 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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourCountermeasures installed to correct a previously existing problem
Structural evaluation7: Better than present minimum criteria
Deck geometry8: Equal to present desirable criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating61.5 US tons
Inventory rating36.9 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length139 ft (42.4 m)
Longest span39 ft (11.8 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic623 (2023)
Projected traffic847 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 statusNot eligible for the National Register of Historic Places
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$577,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-555 over Canadian River built?

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

What condition is NM-555 over Canadian River 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 June 2024.

How much traffic does NM-555 over Canadian River carry?

About 623 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-555 over Canadian River?

The structure is 139 ft (42.4 m) long with a longest span of 39 ft (11.8 m) and a deck 43 ft wide.

Who owns NM-555 over Canadian River?

It is owned by the State Highway Agency.