US Bridges

I-25 Nbl over Matanza Arroyo

Fair

Socorro County, New Mexico · 8 M N JCT I-25/ US-380 · Structure no. 000000000007022

Built
1971
54 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
207 ft
3 main spans
Daily traffic
8,854
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl over Matanza Arroyo is a prestressed concrete stringer/multi-beam or girder carrying I-25 Nbl over Matanza Arroyo in Socorro County, New Mexico. It was built in 1971, so it is 54 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 5 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 8,854 vehicles a day, roughly 45% of them trucks, projected to reach 12,041 by 2043. The structure is 207 ft (63.1 m) long and 41 ft wide.

Location

Open in Google Maps
CarriesI-25 Nbl
CrossesMatanza Arroyo
Location8 M N JCT I-25/ US-380
RouteInterstate 25
CountySocorro County
StateNew Mexico
Coordinates34.03275, -106.89148
Functional classRural Principal Arterial - Interstate

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionFebruary 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating49.5 US tons
Inventory rating27.3 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length207 ft (63.1 m)
Longest span67 ft (20.4 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.6 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,854 (2023)
Projected traffic12,041 by 2043
Trucks45%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesWaterway
Detour if closed—
TollOn a free road
National Highway SystemYes
Strategic Highway NetworkInterstate 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 I-25 Nbl over Matanza Arroyo built?

It was built in 1971, making it 54 years old in 2025.

What condition is I-25 Nbl over Matanza Arroyo 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 February 2024.

How much traffic does I-25 Nbl over Matanza Arroyo carry?

About 8,854 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-25 Nbl over Matanza Arroyo?

The structure is 207 ft (63.1 m) long with a longest span of 67 ft (20.4 m) and a deck 41 ft wide.

Who owns I-25 Nbl over Matanza Arroyo?

It is owned by the State Highway Agency.