US Bridges

US-180 over South Dugway Canyon

Fair

Catron County, New Mexico · 3.0 M NW Grant/Catron Cl · Structure no. 000000000007665

Built
1977
48 years old
Condition
Fair
inspected September 2023
Type
Stringer/Multi-beam or Girder
Steel
Length
186 ft
3 main spans
Daily traffic
962
2023 count
Owner
State
State Highway Agency

About this bridge

US-180 over South Dugway Canyon is a steel stringer/multi-beam or girder carrying US-180 over South Dugway Canyon in Catron 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 962 vehicles a day, roughly 11% of them trucks, projected to reach 1,308 by 2043. The structure is 186 ft (56.7 m) long and 41 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesUS-180
CrossesSouth Dugway Canyon
Location3.0 M NW Grant/Catron Cl
RouteU.S. Route 180
CountyCatron County
StateNew Mexico
Coordinates33.24521, -108.85971
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations on dry land well above flood water elevations
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating51.3 US tons
Inventory rating30.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length186 ft (56.7 m)
Longest span141 ft (43 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic962 (2023)
Projected traffic1,308 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 proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-180 over South Dugway Canyon built?

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

What condition is US-180 over South Dugway Canyon 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 US-180 over South Dugway Canyon carry?

About 962 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is US-180 over South Dugway Canyon?

The structure is 186 ft (56.7 m) long with a longest span of 141 ft (43 m) and a deck 41 ft wide.

Who owns US-180 over South Dugway Canyon?

It is owned by the State Highway Agency.