US Bridges

NM-1 over Crawford Hollow

Good

Socorro County, New Mexico · 9.6 MI N of Sierra Cl · Structure no. 000000000003187

Built
1937
88 years old
Condition
Good
inspected October 2023
Type
Culvert
Concrete
Length
99 ft
10 main spans
Daily traffic
27
2023 count
Owner
State
State Highway Agency

About this bridge

NM-1 over Crawford Hollow is a concrete culvert carrying NM-1 over Crawford Hollow in Socorro County, New Mexico. It was built in 1937, so it is 88 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 27 vehicles a day, roughly 11% of them trucks, projected to reach 36 by 2043. The structure is 99 ft (30.2 m) long. If it were closed, the detour would be 1.9 mi (3 km).

CarriesNM-1
CrossesCrawford Hollow
Location9.6 MI N of Sierra Cl
RouteState Highway 1
Coordinates33.59456, -107.16883
Functional classRural Minor Collector

Condition and inspection

Good

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

ComponentRatingMeaning
Channel and channel protection7 GoodSome minor problems.
Culvert7 GoodSome minor problems.
Last inspectionOctober 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.4 US tons
Inventory rating27 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckConcrete, cast-in-place
Main spans10
Design loadH 15
Structure length99 ft (30.2 m)
Longest span9 ft (2.7 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic27 (2023)
Projected traffic36 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

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$19,000
NavigationNo navigation control on waterway

Frequently asked questions

When was NM-1 over Crawford Hollow built?

It was built in 1937, making it 88 years old in 2025.

What condition is NM-1 over Crawford Hollow 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 2023.

How much traffic does NM-1 over Crawford Hollow carry?

About 27 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-1 over Crawford Hollow?

The structure is 99 ft (30.2 m) long with a longest span of 9 ft (2.7 m).

Who owns NM-1 over Crawford Hollow?

It is owned by the State Highway Agency.