US Bridges

US-285 over Rocky Arroyo

Fair

Eddy County, New Mexico · 11.7 M N JCT US62/CARLSBD · Structure no. 000000000008559

Built
1985
40 years old
Condition
Fair
inspected August 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
454 ft
5 main spans
Daily traffic
13,540
2023 count
Owner
State
State Highway Agency

About this bridge

US-285 over Rocky Arroyo is a prestressed concrete continuous stringer/multi-beam or girder carrying US-285 over Rocky Arroyo in Eddy County, New Mexico. It was built in 1985, so it is 40 years old, younger 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 13,540 vehicles a day, roughly 17% of them trucks, projected to reach 18,414 by 2043. The structure is 454 ft (138.4 m) long and 43 ft wide.

Location

Open in Google Maps
CarriesUS-285
CrossesRocky Arroyo
Location11.7 M N JCT US62/CARLSBD
RouteU.S. Route 285
CountyEddy County
StateNew Mexico
Coordinates32.50563, -104.37489
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
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure7 GoodSome minor problems.
Channel and channel protection7 GoodSome minor problems.
Last inspectionAugust 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating51.1 US tons
Inventory rating28.8 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length454 ft (138.4 m)
Longest span90 ft (27.4 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic13,540 (2023)
Projected traffic18,414 by 2043
Trucks17%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
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$1.4 million (2020 estimate)
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-285 over Rocky Arroyo built?

It was built in 1985, making it 40 years old in 2025.

What condition is US-285 over Rocky Arroyo 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 2024.

How much traffic does US-285 over Rocky Arroyo carry?

About 13,540 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US-285 over Rocky Arroyo?

The structure is 454 ft (138.4 m) long with a longest span of 90 ft (27.4 m) and a deck 43 ft wide.

Who owns US-285 over Rocky Arroyo?

It is owned by the State Highway Agency.