US Bridges

37-C020 over Unnamed Waterway

PoorPosted for load

Quay County, New Mexico · 10.6 MI E of US-66 · Structure no. 000000000001043

Built
1931
94 years old
Condition
Poor
inspected March 2024
Type
Stringer/Multi-beam or Girder
Wood or Timber
Length
42 ft
2 main spans
Daily traffic
100
2023 count
Owner
County
County Highway Agency

About this bridge

37-C020 over Unnamed Waterway is a wood or timber stringer/multi-beam or girder carrying 37-C020 over Unnamed Waterway in Quay County, New Mexico. It was built in 1931, so it is 94 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. Its operating status is: posted for other load-capacity restriction.

It carries about 100 vehicles a day, projected to reach 136 by 2043. The structure is 42 ft (12.8 m) long and 20 ft wide. If it were closed, the detour would be 39.8 mi (64 km).

Carries37-C020
CrossesUnnamed Waterway
Location10.6 MI E of US-66
RouteCounty Highway 37020
Coordinates35.14497, -103.09837
Functional classRural Local

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck4 PoorAdvanced section loss, deterioration, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMarch 2024
Inspection intervalevery 24 months
Operating statusPosted for other load-capacity restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating46.4 US tons
Inventory rating28.5 US tons

Structure

MaterialWood or Timber
DeckWood or timber
Main spans2
Design loadHS 15
Structure length42 ft (12.8 m)
Longest span20 ft (6.1 m)
Deck width20 ft (6.1 m)
Roadway width20 ft (6.1 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic100 (2023)
Projected traffic136 by 2043
Trucks—
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed39.8 mi (64 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$50,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 37-C020 over Unnamed Waterway built?

It was built in 1931, making it 94 years old in 2025.

What condition is 37-C020 over Unnamed Waterway in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in March 2024.

How much traffic does 37-C020 over Unnamed Waterway carry?

About 100 vehicles per day (2023 count).

How long is 37-C020 over Unnamed Waterway?

The structure is 42 ft (12.8 m) long with a longest span of 20 ft (6.1 m) and a deck 20 ft wide.

Who owns 37-C020 over Unnamed Waterway?

It is owned by the County Highway Agency.