US Bridges

I-25 Sbl over Tonque Arroyo

Fair

Sandoval County, New Mexico · 10.5 M N JCT US-550 · Structure no. 000000000008375

Built
1984
41 years old
Condition
Fair
inspected February 2024
Type
Stringer/Multi-beam or Girder
Prestressed Concrete Continuous
Length
341 ft
4 main spans
Daily traffic
40,791
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Sbl over Tonque Arroyo is a prestressed concrete continuous stringer/multi-beam or girder carrying I-25 Sbl over Tonque Arroyo in Sandoval County, New Mexico. It was built in 1984, so it is 41 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 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 40,791 vehicles a day, roughly 45% of them trucks, projected to reach 55,475 by 2043. The structure is 341 ft (103.9 m) long and 45 ft wide.

Location

Open in Google Maps
CarriesI-25 Sbl
CrossesTonque Arroyo
Location10.5 M N JCT US-550
RouteInterstate 25
CountySandoval County
StateNew Mexico
Coordinates35.41885, -106.40338
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
Deck7 GoodSome minor problems.
Superstructure7 GoodSome minor problems.
Substructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
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 geometry8: Equal to present desirable criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating56.7 US tons
Inventory rating35.5 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length341 ft (103.9 m)
Longest span86 ft (26.2 m)
Deck width45 ft (13.7 m)
Roadway width42 ft (12.8 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic40,791 (2023)
Projected traffic55,475 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 Sbl over Tonque Arroyo built?

It was built in 1984, making it 41 years old in 2025.

What condition is I-25 Sbl over Tonque 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 Sbl over Tonque Arroyo carry?

About 40,791 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-25 Sbl over Tonque Arroyo?

The structure is 341 ft (103.9 m) long with a longest span of 86 ft (26.2 m) and a deck 45 ft wide.

Who owns I-25 Sbl over Tonque Arroyo?

It is owned by the State Highway Agency.