US Bridges

I-25 Nbl/Sbl over Unnamed Waterway

Fair

Sandoval County, New Mexico · 7.94 MI N JCT I-25/US-550 · Structure no. 000000000010084

Built
1960
65 years old, rebuilt 1983
Condition
Fair
inspected March 2023
Type
Culvert
Steel
Length
49 ft
3 main spans
Daily traffic
35,761
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl/Sbl over Unnamed Waterway is a steel culvert carrying I-25 Nbl/Sbl over Unnamed Waterway in Sandoval County, New Mexico. It was built in 1960 and reconstructed in 1983, so it is 65 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 35,761 vehicles a day, roughly 45% of them trucks, projected to reach 48,634 by 2043. The structure is 49 ft (14.9 m) long. If it were closed, the detour would be 3.1 mi (5 km).

Location

Open in Google Maps
CarriesI-25 Nbl/Sbl
CrossesUnnamed Waterway
Location7.94 MI N JCT I-25/US-550
RouteInterstate 25
CountySandoval County
StateNew Mexico
Coordinates35.39977, -106.43855
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
Channel and channel protection6 SatisfactoryStructural elements show some minor deterioration.
Culvert5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialSteel
DeckNot applicable
Main spans3
Design loadHS 20
Structure length49 ft (14.9 m)
Longest span13 ft (4 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic35,761 (2023)
Projected traffic48,634 by 2043
Trucks45%
Lanes on structure6
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed3.1 mi (5 km)
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/Sbl over Unnamed Waterway built?

It was built in 1960, making it 65 years old in 2025. It was reconstructed in 1983.

What condition is I-25 Nbl/Sbl 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 March 2023.

How much traffic does I-25 Nbl/Sbl over Unnamed Waterway carry?

About 35,761 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-25 Nbl/Sbl over Unnamed Waterway?

The structure is 49 ft (14.9 m) long with a longest span of 13 ft (4 m).

Who owns I-25 Nbl/Sbl over Unnamed Waterway?

It is owned by the State Highway Agency.