US Bridges

NM-602 over Unnamed Waterway

Fair

McKinley County, New Mexico · 17.0 MI S of NM-118 · Structure no. 000000000008453

Built
1980
45 years old
Condition
Fair
inspected September 2023
Type
Culvert
Concrete
Length
62 ft
5 main spans
Daily traffic
5,009
2023 count
Owner
State
State Highway Agency

About this bridge

NM-602 over Unnamed Waterway is a concrete culvert carrying NM-602 over Unnamed Waterway in McKinley 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 5,009 vehicles a day, roughly 23% of them trucks, projected to reach 6,812 by 2043. The structure is 62 ft (18.9 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesNM-602
CrossesUnnamed Waterway
Location17.0 MI S of NM-118
RouteState Highway 602
Coordinates35.29106, -108.75634
Functional classRural Principal Arterial - Other

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating71.4 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20
Structure length62 ft (18.9 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 traffic5,009 (2023)
Projected traffic6,812 by 2043
Trucks23%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 km)
TollOn a free road
National Highway SystemNo
Strategic Highway NetworkInterstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$286,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-602 over Unnamed Waterway built?

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

What condition is NM-602 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 September 2023.

How much traffic does NM-602 over Unnamed Waterway carry?

About 5,009 vehicles per day (2023 count), of which roughly 23% are trucks.

How long is NM-602 over Unnamed Waterway?

The structure is 62 ft (18.9 m) long with a longest span of 10 ft (3 m).

Who owns NM-602 over Unnamed Waterway?

It is owned by the State Highway Agency.