US Bridges

US-70 over Unnamed Waterway

Fair

Otero County, New Mexico · 0.55 MI SW of US-54/ALAMO · Structure no. 000000000002252

Built
1937
88 years old, rebuilt 1956
Condition
Fair
inspected August 2022
Type
Culvert
Concrete
Length
30 ft
5 main spans
Daily traffic
17,337
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 Otero County, New Mexico. It was built in 1937 and reconstructed in 1956, 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 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 17,337 vehicles a day, roughly 17% of them trucks, projected to reach 23,578 by 2043. The structure is 30 ft (9.1 m) long.

CarriesUS-70
CrossesUnnamed Waterway
Location0.55 MI SW of US-54/ALAMO
RouteU.S. Route 70
Coordinates32.86775, -105.97781
Functional classUrban Other Principal Arterial

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 protection7 GoodSome minor problems.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2022
Inspection intervalevery 48 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 rating53.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20
Structure length30 ft (9.1 m)
Longest span6 ft (1.8 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic17,337 (2023)
Projected traffic23,578 by 2043
Trucks17%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkNon-Interstate STRAHNET route

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedNone recorded
Estimated improvement cost—
NavigationNot applicable (no waterway)

Frequently asked questions

When was US-70 over Unnamed Waterway built?

It was built in 1937, making it 88 years old in 2025. It was reconstructed in 1956.

What condition is US-70 over Unnamed Waterway 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 August 2022.

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

About 17,337 vehicles per day (2023 count), of which roughly 17% are trucks.

How long is US-70 over Unnamed Waterway?

The structure is 30 ft (9.1 m) long with a longest span of 6 ft (1.8 m).

Who owns US-70 over Unnamed Waterway?

It is owned by the State Highway Agency.