US Bridges

55-001 over Rio Hondo

Fair

Taos County, New Mexico · S of JCT Nm 150 / Nm 230 · Structure no. 000000000006047

Built
1959
66 years old
Condition
Fair
inspected August 2023
Type
Slab
Concrete
Length
32 ft
1 main span
Daily traffic
250
2023 count
Owner
County
County Highway Agency

About this bridge

55-001 over Rio Hondo is a concrete slab carrying 55-001 over Rio Hondo in Taos County, New Mexico. It was built in 1959, so it is 66 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 250 vehicles a day, projected to reach 340 by 2043. The structure is 32 ft (9.9 m) long and 15 ft wide.

Location

Open in Google Maps
Carries55-001
CrossesRio Hondo
LocationS of JCT Nm 150 / Nm 230
RouteCounty Highway 55001
CountyTaos County
StateNew Mexico
Coordinates36.53859, -105.56087
Functional classRural Local

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourUnknown foundation; not evaluated for scour
Structural evaluation6: Equal to present minimum criteria
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating55.3 US tons
Inventory rating35.7 US tons

Structure

Structure typeSlab
MaterialConcrete
DeckConcrete, cast-in-place
Main spans1
Design loadUnknown
Structure length32 ft (9.9 m)
Longest span29 ft (8.8 m)
Deck width15 ft (4.5 m)
Roadway width13 ft (4 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic250 (2023)
Projected traffic340 by 2043
Trucks—
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty 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$31,000 (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was 55-001 over Rio Hondo built?

It was built in 1959, making it 66 years old in 2025.

What condition is 55-001 over Rio Hondo 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 August 2023.

How much traffic does 55-001 over Rio Hondo carry?

About 250 vehicles per day (2023 count).

How long is 55-001 over Rio Hondo?

The structure is 32 ft (9.9 m) long with a longest span of 29 ft (8.8 m) and a deck 15 ft wide.

Who owns 55-001 over Rio Hondo?

It is owned by the County Highway Agency.