US Bridges

IRR/US-550 over Arroyo Dedos Gordo

Fair

Sandoval County, New Mexico · 47.9 MI NW of JCT I-25 · Structure no. 000000000006853

Built
1966
59 years old
Condition
Fair
inspected July 2023
Type
Culvert
Concrete
Length
22 ft
2 main spans
Daily traffic
5,416
2023 count
Owner
State
State Highway Agency

About this bridge

IRR/US-550 over Arroyo Dedos Gordo is a concrete culvert carrying IRR/US-550 over Arroyo Dedos Gordo 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 5 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 5,416 vehicles a day, roughly 17% of them trucks, projected to reach 7,365 by 2043. The structure is 22 ft (6.7 m) long. If it were closed, the detour would be 98.8 mi (159 km).

Location

Open in Google Maps
CarriesIRR/US-550
CrossesArroyo Dedos Gordo
Location47.9 MI NW of JCT I-25
RouteU.S. Route 550
CountySandoval County
StateNew Mexico
Coordinates35.79801, -106.95648
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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionJuly 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
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 length22 ft (6.7 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 traffic5,416 (2023)
Projected traffic7,365 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$155,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was IRR/US-550 over Arroyo Dedos Gordo built?

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

What condition is IRR/US-550 over Arroyo Dedos Gordo 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 July 2023.

How much traffic does IRR/US-550 over Arroyo Dedos Gordo carry?

About 5,416 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is IRR/US-550 over Arroyo Dedos Gordo?

The structure is 22 ft (6.7 m) long with a longest span of 10 ft (3 m).

Who owns IRR/US-550 over Arroyo Dedos Gordo?

It is owned by the State Highway Agency.