US Bridges

Fdr 156 over Gallinas River

Good

San Miguel County, New Mexico · .31 MI E/O E.V. Long Cg · Structure no. 031005000001512

Built
1966
59 years old
Condition
Good
inspected June 2023
Type
Stringer/Multi-beam or Girder
Concrete Continuous
Length
45 ft
3 main spans
Daily traffic
150
2022 count
Owner
Federal
U.S. Forest Service

About this bridge

Fdr 156 over Gallinas River is a concrete continuous stringer/multi-beam or girder carrying Fdr 156 over Gallinas River in San Miguel County, New Mexico. It was built in 1966, so it is 59 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 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 150 vehicles a day, roughly 5% of them trucks, projected to reach 200 by 2040. The structure is 45 ft (13.7 m) long and 29 ft wide. If it were closed, the detour would be 98.2 mi (158 km).

CarriesFdr 156
CrossesGallinas River
Location.31 MI E/O E.V. Long Cg
RouteFederal Lands Road 156
Coordinates35.69836, -105.41617
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 protection7 GoodSome minor problems.
Last inspectionJune 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation7: Better than present minimum criteria
Deck geometry5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating48.2 US tons
Inventory rating37.1 US tons

Structure

MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans3
Design loadH 20
Structure length45 ft (13.7 m)
Longest span27 ft (8.2 m)
Deck width29 ft (8.8 m)
Roadway width26 ft (7.9 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic150 (2022)
Projected traffic200 by 2040
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 proposedDeck rehabilitation with only incidental widening
Estimated improvement cost$200,000
NavigationNo navigation control on waterway

Frequently asked questions

When was Fdr 156 over Gallinas River built?

It was built in 1966, making it 59 years old in 2025.

What condition is Fdr 156 over Gallinas 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 June 2023.

How much traffic does Fdr 156 over Gallinas River carry?

About 150 vehicles per day (2022 count), of which roughly 5% are trucks.

How long is Fdr 156 over Gallinas River?

The structure is 45 ft (13.7 m) long with a longest span of 27 ft (8.2 m) and a deck 29 ft wide.

Who owns Fdr 156 over Gallinas River?

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