US Bridges

NM-20 over Yeso Creek

Fair

De Baca County, New Mexico · 17.0 MI S of JCT US-60 · Structure no. 000000000003470

Built
1948
77 years old
Condition
Fair
inspected May 2024
Type
Slab
Concrete Continuous
Length
147 ft
5 main spans
Daily traffic
150
2023 count
Owner
State
State Highway Agency

About this bridge

NM-20 over Yeso Creek is a concrete continuous slab carrying NM-20 over Yeso Creek in De Baca County, New Mexico. It was built in 1948, so it is 77 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 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 150 vehicles a day, roughly 11% of them trucks, projected to reach 204 by 2043. The structure is 147 ft (44.8 m) long and 30 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesNM-20
CrossesYeso Creek
Location17.0 MI S of JCT US-60
RouteState Highway 20
Coordinates34.27722, -104.29889
Functional classRural Major 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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating45 US tons
Inventory rating27 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length147 ft (44.8 m)
Longest span29 ft (8.8 m)
Deck width30 ft (9.1 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2023)
Projected traffic204 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 statusEligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$302,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-20 over Yeso Creek built?

It was built in 1948, making it 77 years old in 2025.

What condition is NM-20 over Yeso Creek 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 May 2024.

How much traffic does NM-20 over Yeso Creek carry?

About 150 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-20 over Yeso Creek?

The structure is 147 ft (44.8 m) long with a longest span of 29 ft (8.8 m) and a deck 30 ft wide.

Who owns NM-20 over Yeso Creek?

It is owned by the State Highway Agency.