US Bridges

NM-6 over BNSF Railroad

Fair

Valencia County, New Mexico · 4.9 MI W of JCT I-25 · Structure no. 000000000007660

Built
1977
48 years old
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
168 ft
3 main spans
Daily traffic
20,429
2023 count
Owner
State
State Highway Agency

About this bridge

NM-6 over BNSF Railroad is a prestressed concrete continuous stringer/multi-beam or girder carrying NM-6 over BNSF Railroad in Valencia County, New Mexico. It was built in 1977, so it is 48 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 20,429 vehicles a day, roughly 5% of them trucks, projected to reach 27,783 by 2043. The structure is 168 ft (51.2 m) long and 41 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

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CarriesNM-6
CrossesBNSF Railroad
Location4.9 MI W of JCT I-25
RouteState Highway 6
CountyValencia County
StateNew Mexico
Coordinates34.81832, -106.84686
Functional classRural Minor Arterial

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length168 ft (51.2 m)
Longest span67 ft (20.4 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic20,429 (2023)
Projected traffic27,783 by 2043
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesRailroad
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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-6 over BNSF Railroad built?

It was built in 1977, making it 48 years old in 2025.

What condition is NM-6 over BNSF Railroad 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 February 2023.

How much traffic does NM-6 over BNSF Railroad carry?

About 20,429 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is NM-6 over BNSF Railroad?

The structure is 168 ft (51.2 m) long with a longest span of 67 ft (20.4 m) and a deck 41 ft wide.

Who owns NM-6 over BNSF Railroad?

It is owned by the State Highway Agency.