US Bridges

NM-122 over Unnamed Waterway

Fair

Cibola County, New Mexico · 1.3 MI E of NM-605 · Structure no. 000000000003106

Built
1939
86 years old, rebuilt 1955
Condition
Fair
inspected October 2023
Type
Culvert
Concrete
Length
23 ft
3 main spans
Daily traffic
9,054
2023 count
Owner
State
State Highway Agency

About this bridge

NM-122 over Unnamed Waterway is a concrete culvert carrying NM-122 over Unnamed Waterway in Cibola County, New Mexico. It was built in 1939 and reconstructed in 1955, so it is 86 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 5 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 9,054 vehicles a day, roughly 12% of them trucks, projected to reach 12,313 by 2043. The structure is 23 ft (7 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesNM-122
CrossesUnnamed Waterway
Location1.3 MI E of NM-605
RouteState Highway 122
CountyCibola County
StateNew Mexico
Coordinates35.16847, -107.88961
Functional classUrban Other Principal 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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating39.2 US tons
Inventory rating26.8 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 15
Structure length23 ft (7 m)
Longest span7 ft (2.1 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic9,054 (2023)
Projected traffic12,313 by 2043
Trucks12%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState 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$229,000 (2020 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was NM-122 over Unnamed Waterway built?

It was built in 1939, making it 86 years old in 2025. It was reconstructed in 1955.

What condition is NM-122 over Unnamed Waterway 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 October 2023.

How much traffic does NM-122 over Unnamed Waterway carry?

About 9,054 vehicles per day (2023 count), of which roughly 12% are trucks.

How long is NM-122 over Unnamed Waterway?

The structure is 23 ft (7 m) long with a longest span of 7 ft (2.1 m).

Who owns NM-122 over Unnamed Waterway?

It is owned by the State Highway Agency.