US Bridges

US-285 N over Black River

Good

Eddy County, New Mexico · 17.1 MI N of Texas Line · Structure no. 000000000009035

Built
1998
27 years old, rebuilt 2023
Condition
Good
inspected December 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
328 ft
3 main spans
Daily traffic
4,705
2022 count
Owner
State
State Highway Agency

About this bridge

US-285 N over Black River is a prestressed concrete continuous stringer/multi-beam or girder carrying US-285 N over Black River in Eddy County, New Mexico. It was built in 1998 and reconstructed in 2023, so it is 27 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 good condition with a lowest component rating of 7 out of 9. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

It carries about 4,705 vehicles a day, roughly 14% of them trucks, projected to reach 6,398 by 2042. The structure is 328 ft (100.1 m) long and 43 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

CarriesUS-285 N
CrossesBlack River
Location17.1 MI N of Texas Line
RouteU.S. Route 285
Coordinates32.23541, -104.07976
Functional classRural Principal Arterial - Other

Condition and inspection

Good

All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted.

ComponentRatingMeaning
Deck8 Very GoodNo problems noted.
Superstructure8 Very GoodNo problems noted.
Substructure7 GoodSome minor problems.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionDecember 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating51.1 US tons
Inventory rating30.6 US tons

Structure

MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length328 ft (100.1 m)
Longest span115 ft (35 m)
Deck width43 ft (13.1 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic4,705 (2022)
Projected traffic6,398 by 2042
Trucks14%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.7 mi (6 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-285 N over Black River built?

It was built in 1998, making it 27 years old in 2025. It was reconstructed in 2023.

What condition is US-285 N over Black River in?

The National Bridge Inventory rates it in good condition. All primary components (deck, superstructure, substructure, or culvert) are rated 7 or higher. No significant problems were noted. The last reported inspection was in December 2023.

How much traffic does US-285 N over Black River carry?

About 4,705 vehicles per day (2022 count), of which roughly 14% are trucks.

How long is US-285 N over Black River?

The structure is 328 ft (100.1 m) long with a longest span of 115 ft (35 m) and a deck 43 ft wide.

Who owns US-285 N over Black River?

It is owned by the State Highway Agency.