US Bridges

FSR 150 over Black Canyon

GoodPosted for load

Grant County, New Mexico · 31.7 Miles N. Mimbres Nm · Structure no. 030605000001022

Built
2011
14 years old
Condition
Good
inspected October 2024
Type
Slab
Concrete Continuous
Length
52 ft
2 main spans
Daily traffic
399
2021 count
Owner
Federal
U.S. Forest Service

About this bridge

FSR 150 over Black Canyon is a concrete continuous slab carrying FSR 150 over Black Canyon in Grant County, New Mexico. It was built in 2011, so it is 14 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. Its operating status is: posted for load restriction.

It carries about 399 vehicles a day, roughly 5% of them trucks, projected to reach 499 by 2042. The structure is 52 ft (15.9 m) long and 16 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesFSR 150
CrossesBlack Canyon
Location31.7 Miles N. Mimbres Nm
RouteFederal Lands Road 150
Coordinates33.18517, -108.02796
Functional classRural Local

Condition and inspection

Good

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

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure7 GoodSome minor problems.
Channel and channel protection4 PoorAdvanced section loss, deterioration, spalling or scour.
Last inspectionOctober 2024
Inspection intervalevery 24 months
Operating statusPosted for load restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry2: Basically intolerable, requiring high priority of replacement
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating22.5 US tons
Inventory rating17.5 US tons

Structure

Structure typeSlab
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans2
Design loadHS 20
Structure length52 ft (15.9 m)
Longest span26 ft (8 m)
Deck width16 ft (5 m)
Roadway width14 ft (4.3 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic399 (2021)
Projected traffic499 by 2042
Trucks5%
Lanes on structure1
Traffic directionOne-lane bridge for two-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.2 mi (158 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerU.S. Forest Service
Maintained byU.S. Forest Service
Historic statusHistorical significance not determinable at this time
Work proposedReplacement because of substandard load-carrying capacity or roadway geometry
Estimated improvement cost$340,000
NavigationNo navigation control on waterway

Frequently asked questions

When was FSR 150 over Black Canyon built?

It was built in 2011, making it 14 years old in 2025.

What condition is FSR 150 over Black Canyon 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 October 2024.

How much traffic does FSR 150 over Black Canyon carry?

About 399 vehicles per day (2021 count), of which roughly 5% are trucks.

How long is FSR 150 over Black Canyon?

The structure is 52 ft (15.9 m) long with a longest span of 26 ft (8 m) and a deck 16 ft wide.

Who owns FSR 150 over Black Canyon?

It is owned by the U.S. Forest Service.