US Bridges

NM-90 over Unnamed Waterway

Fair

Hidalgo County, New Mexico · 1.99 MI N of JCT US-70 at · Structure no. 000000000007442

Built
1974
51 years old
Condition
Fair
inspected August 2023
Type
Culvert
Concrete
Length
76 ft
5 main spans
Daily traffic
1,575
2023 count
Owner
State
State Highway Agency

About this bridge

NM-90 over Unnamed Waterway is a concrete culvert carrying NM-90 over Unnamed Waterway in Hidalgo County, New Mexico. It was built in 1974, so it is 51 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 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 1,575 vehicles a day, roughly 11% of them trucks, projected to reach 2,142 by 2043. The structure is 76 ft (23.3 m) long and 41 ft wide. If it were closed, the detour would be 98.8 mi (159 km).

CarriesNM-90
CrossesUnnamed Waterway
Location1.99 MI N of JCT US-70 at
RouteState Highway 90
Coordinates32.40476, -108.69047
Functional classRural Minor 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 protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry7: Better than present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating61.2 US tons
Inventory rating36 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans5
Design loadHS 20
Structure length76 ft (23.3 m)
Longest span10 ft (3 m)
Deck width41 ft (12.5 m)
Roadway width40 ft (12.2 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,575 (2023)
Projected traffic2,142 by 2043
Trucks11%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed98.8 mi (159 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 proposedNone recorded
Estimated improvement cost—
NavigationNo navigation control on waterway

Frequently asked questions

When was NM-90 over Unnamed Waterway built?

It was built in 1974, making it 51 years old in 2025.

What condition is NM-90 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 2023.

How much traffic does NM-90 over Unnamed Waterway carry?

About 1,575 vehicles per day (2023 count), of which roughly 11% are trucks.

How long is NM-90 over Unnamed Waterway?

The structure is 76 ft (23.3 m) long with a longest span of 10 ft (3 m) and a deck 41 ft wide.

Who owns NM-90 over Unnamed Waterway?

It is owned by the State Highway Agency.