US Bridges

Forest Road 141 over Gwynn Canyon

Fair

Catron County, New Mexico · 31.5 Miles SW Reserve Nm · Structure no. 030606000001033

Built
1960
65 years old
Condition
Fair
inspected October 2024
Type
Culvert
Steel
Length
37 ft
2 main spans
Daily traffic
399
2021 count
Owner
Federal
U.S. Forest Service

About this bridge

Forest Road 141 over Gwynn Canyon is a steel culvert carrying Forest Road 141 over Gwynn Canyon in Catron County, New Mexico. It was built in 1960, so it is 65 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 399 vehicles a day, roughly 5% of them trucks, projected to reach 499 by 2042. The structure is 37 ft (11.4 m) long. If it were closed, the detour would be 24.9 mi (40 km).

CarriesForest Road 141
CrossesGwynn Canyon
Location31.5 Miles SW Reserve Nm
RouteFederal Lands Road 141
Coordinates33.53273, -108.57137
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
Channel and channel protection8 Very GoodNo problems noted.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionOctober 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
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment6: Equal to present minimum criteria
Operating rating107.1 US tons
Inventory rating85.8 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans2
Design loadUnknown
Structure length37 ft (11.4 m)
Longest span16 ft (4.9 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic399 (2021)
Projected traffic499 by 2042
Trucks5%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed24.9 mi (40 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$252,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Forest Road 141 over Gwynn Canyon built?

It was built in 1960, making it 65 years old in 2025.

What condition is Forest Road 141 over Gwynn Canyon 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 October 2024.

How much traffic does Forest Road 141 over Gwynn Canyon carry?

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

How long is Forest Road 141 over Gwynn Canyon?

The structure is 37 ft (11.4 m) long with a longest span of 16 ft (4.9 m).

Who owns Forest Road 141 over Gwynn Canyon?

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