US Bridges

NM-283 over Unnamed Waterway

Good

San Miguel County, New Mexico · 4.4 MI NW of I-25 · Structure no. 000000000007981

Built
1979
46 years old
Condition
Good
inspected July 2022
Type
Culvert
Concrete
Length
47 ft
3 main spans
Daily traffic
448
2023 count
Owner
State
State Highway Agency

About this bridge

NM-283 over Unnamed Waterway is a concrete culvert carrying NM-283 over Unnamed Waterway in San Miguel County, New Mexico. It was built in 1979, so it is 46 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 448 vehicles a day, roughly 11% of them trucks, projected to reach 609 by 2043. The structure is 47 ft (14.3 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesNM-283
CrossesUnnamed Waterway
Location4.4 MI NW of I-25
RouteState Highway 283
Coordinates35.57045, -105.29781
Functional classRural Major Collector

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJuly 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating78.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans3
Design loadHS 20
Structure length47 ft (14.3 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic448 (2023)
Projected traffic609 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 NM-283 over Unnamed Waterway built?

It was built in 1979, making it 46 years old in 2025.

What condition is NM-283 over Unnamed Waterway in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in July 2022.

How much traffic does NM-283 over Unnamed Waterway carry?

About 448 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-283 over Unnamed Waterway?

The structure is 47 ft (14.3 m) long with a longest span of 10 ft (3 m).

Who owns NM-283 over Unnamed Waterway?

It is owned by the State Highway Agency.