US Bridges

NM-414 over Rio Vallecitos

Poor

Taos County, New Mexico · 0.4 MI W of JCT US 285 · Structure no. 000000000005459

Built
1954
71 years old
Condition
Poor
inspected September 2024
Type
Channel Beam
Concrete
Length
151 ft
6 main spans
Daily traffic
712
2023 count
Owner
State
State Highway Agency

About this bridge

NM-414 over Rio Vallecitos is a concrete channel beam carrying NM-414 over Rio Vallecitos in Taos County, New Mexico. It was built in 1954, so it is 71 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.

It carries about 712 vehicles a day, roughly 11% of them trucks, projected to reach 968 by 2043. The structure is 151 ft (46 m) long and 29 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesNM-414
CrossesRio Vallecitos
Location0.4 MI W of JCT US 285
RouteState Highway 414
Coordinates36.30489, -106.05059
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
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry3: Basically intolerable, requiring high priority of corrective action
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating38 US tons
Inventory rating22.8 US tons

Structure

Structure typeChannel Beam
MaterialConcrete
DeckConcrete, precast panels
Main spans6
Design loadHS 20
Structure length151 ft (46 m)
Longest span26 ft (8 m)
Deck width29 ft (8.7 m)
Roadway width20 ft (6.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic712 (2023)
Projected traffic968 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 statusPossibly eligible for the National Register; requires further investigation
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$277,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was NM-414 over Rio Vallecitos built?

It was built in 1954, making it 71 years old in 2025.

What condition is NM-414 over Rio Vallecitos 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 September 2024.

How much traffic does NM-414 over Rio Vallecitos carry?

About 712 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-414 over Rio Vallecitos?

The structure is 151 ft (46 m) long with a longest span of 26 ft (8 m) and a deck 29 ft wide.

Who owns NM-414 over Rio Vallecitos?

It is owned by the State Highway Agency.