US Bridges

NM-161 over Cebolla Creek

Poor

Mora County, New Mexico · 1.9 MI E of JCT NM-518 · Structure no. 000000000007746

Built
1980
45 years old
Condition
Poor
inspected June 2024
Type
Channel Beam
Concrete
Length
54 ft
2 main spans
Daily traffic
81
2023 count
Owner
State
State Highway Agency

About this bridge

NM-161 over Cebolla Creek is a concrete channel beam carrying NM-161 over Cebolla Creek in Mora 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 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.

It carries about 81 vehicles a day, roughly 11% of them trucks, projected to reach 110 by 2043. The structure is 54 ft (16.5 m) long and 31 ft wide. If it were closed, the detour would be 65.2 mi (105 km).

CarriesNM-161
CrossesCebolla Creek
Location1.9 MI E of JCT NM-518
RouteState Highway 161
Coordinates35.88691, -105.22835
Functional classRural Minor Collector

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.
Substructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJune 2024
Inspection intervalevery 12 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating33.1 US tons
Inventory rating19.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans2
Design loadHS 20
Structure length54 ft (16.5 m)
Longest span25 ft (7.6 m)
Deck width31 ft (9.3 m)
Roadway width29 ft (8.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic81 (2023)
Projected traffic110 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed65.2 mi (105 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 proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$330,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-161 over Cebolla Creek built?

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

What condition is NM-161 over Cebolla Creek 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 June 2024.

How much traffic does NM-161 over Cebolla Creek carry?

About 81 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-161 over Cebolla Creek?

The structure is 54 ft (16.5 m) long with a longest span of 25 ft (7.6 m) and a deck 31 ft wide.

Who owns NM-161 over Cebolla Creek?

It is owned by the State Highway Agency.