US Bridges

US-70 over Unnamed Waterway

Good

Dona Ana County, New Mexico · 1.38 Mi. East of W.S.M.R. · Structure no. 000000000007997

Built
1979
46 years old
Condition
Good
inspected January 2025
Type
Culvert
Concrete
Length
74 ft
7 main spans
Daily traffic
6,758
2023 count
Owner
State
State Highway Agency

About this bridge

US-70 over Unnamed Waterway is a concrete culvert carrying US-70 over Unnamed Waterway in Dona Ana County, New Mexico. It was built in 1979, so it is 46 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 6,758 vehicles a day, roughly 17% of them trucks, projected to reach 9,190 by 2043. The structure is 74 ft (22.6 m) long. If it were closed, the detour would be 98.8 mi (159 km).

CarriesUS-70
CrossesUnnamed Waterway
Location1.38 Mi. East of W.S.M.R.
RouteU.S. Route 70
Coordinates32.44656, -106.44971
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert7 GoodSome minor problems.
Last inspectionJanuary 2025
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation7: Better than present minimum criteria
Waterway adequacy7: Better than present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans7
Design loadHS 20
Structure length74 ft (22.6 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deck100 ft (30.5 m)

Traffic and service

Average daily traffic6,758 (2023)
Projected traffic9,190 by 2043
Trucks17%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$584,000
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-70 over Unnamed Waterway built?

It was built in 1979, making it 46 years old in 2025.

What condition is US-70 over Unnamed Waterway 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 January 2025.

How much traffic does US-70 over Unnamed Waterway carry?

About 6,758 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US-70 over Unnamed Waterway?

The structure is 74 ft (22.6 m) long with a longest span of 10 ft (3 m).

Who owns US-70 over Unnamed Waterway?

It is owned by the State Highway Agency.