US Bridges

US-550 over Arroyo De Los Pinos

Fair

Sandoval County, New Mexico · 11.3 Miles SE of Nm 197 · Structure no. 000000000009143

Built
1966
59 years old
Condition
Fair
inspected May 2024
Type
Culvert
Steel
Length
28 ft
2 main spans
Daily traffic
5,348
2023 count
Owner
State
State Highway Agency

About this bridge

US-550 over Arroyo De Los Pinos is a steel culvert carrying US-550 over Arroyo De Los Pinos in Sandoval County, New Mexico. It was built in 1966, so it is 59 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 6 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 5,348 vehicles a day, roughly 17% of them trucks, projected to reach 7,273 by 2043. The structure is 28 ft (8.5 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesUS-550
CrossesArroyo De Los Pinos
Location11.3 Miles SE of Nm 197
RouteU.S. Route 550
Coordinates35.85624, -106.96875
Functional classRural Principal Arterial - Other

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionMay 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating72 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadHS 20
Structure length28 ft (8.5 m)
Longest span11 ft (3.5 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic5,348 (2023)
Projected traffic7,273 by 2043
Trucks17%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was US-550 over Arroyo De Los Pinos built?

It was built in 1966, making it 59 years old in 2025.

What condition is US-550 over Arroyo De Los Pinos 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 May 2024.

How much traffic does US-550 over Arroyo De Los Pinos carry?

About 5,348 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US-550 over Arroyo De Los Pinos?

The structure is 28 ft (8.5 m) long with a longest span of 11 ft (3.5 m).

Who owns US-550 over Arroyo De Los Pinos?

It is owned by the State Highway Agency.