US Bridges

US-550 over Encantado Channel

Fair

Sandoval County, New Mexico · 3.9 MI NW of JCT I-25 · Structure no. 000000000006993

Built
1968
57 years old
Condition
Fair
inspected January 2024
Type
Culvert
Concrete
Length
31 ft
2 main spans
Daily traffic
27,379
2023 count
Owner
State
State Highway Agency

About this bridge

US-550 over Encantado Channel is a concrete culvert carrying US-550 over Encantado Channel in Sandoval County, New Mexico. It was built in 1968, so it is 57 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 27,379 vehicles a day, roughly 17% of them trucks, projected to reach 37,235 by 2043. The structure is 31 ft (9.4 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesUS-550
CrossesEncantado Channel
Location3.9 MI NW of JCT I-25
RouteU.S. Route 550
Coordinates35.34358, -106.59242
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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionJanuary 2024
Inspection intervalevery 48 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 rating98.2 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length31 ft (9.4 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 traffic27,379 (2023)
Projected traffic37,235 by 2043
Trucks17%
Lanes on structure5
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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$357,000 (2030 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-550 over Encantado Channel built?

It was built in 1968, making it 57 years old in 2025.

What condition is US-550 over Encantado Channel 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 January 2024.

How much traffic does US-550 over Encantado Channel carry?

About 27,379 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US-550 over Encantado Channel?

The structure is 31 ft (9.4 m) long with a longest span of 10 ft (3 m).

Who owns US-550 over Encantado Channel?

It is owned by the State Highway Agency.