US Bridges

NM-50 over Unnamed Waterway

Good

Santa Fe County, New Mexico · 1.02 MI East JCT I-25 · Structure no. 000000000009854

Built
2021
4 years old
Condition
Good
inspected June 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
43 ft
1 main span
Daily traffic
4,290
2020 count
Owner
State
State Highway Agency

About this bridge

NM-50 over Unnamed Waterway is a prestressed concrete stringer/multi-beam or girder carrying NM-50 over Unnamed Waterway in Santa Fe County, New Mexico. It was built in 2021, so it is 4 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 4,290 vehicles a day, roughly 21% of them trucks, projected to reach 3,687 by 2040. The structure is 43 ft (13.1 m) long and 35 ft wide. If it were closed, the detour would be 24.9 mi (40 km).

CarriesNM-50
CrossesUnnamed Waterway
Location1.02 MI East JCT I-25
RouteState Highway 50
Coordinates35.57182, -105.75538
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
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionJune 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating96.3 US tons
Inventory rating57.7 US tons

Structure

MaterialPrestressed Concrete
DeckOther
Main spans1
Design loadHL 93
Structure length43 ft (13.1 m)
Longest span40 ft (12.2 m)
Deck width35 ft (10.7 m)
Roadway width32 ft (9.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,290 (2020)
Projected traffic3,687 by 2040
Trucks21%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$67,000 (2030 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was NM-50 over Unnamed Waterway built?

It was built in 2021, making it 4 years old in 2025.

What condition is NM-50 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 June 2024.

How much traffic does NM-50 over Unnamed Waterway carry?

About 4,290 vehicles per day (2020 count), of which roughly 21% are trucks.

How long is NM-50 over Unnamed Waterway?

The structure is 43 ft (13.1 m) long with a longest span of 40 ft (12.2 m) and a deck 35 ft wide.

Who owns NM-50 over Unnamed Waterway?

It is owned by the State Highway Agency.