US Bridges

I-25 Nbl/Sbl/Frtg over Unnamed Waterway

Fair

San Miguel County, New Mexico · 15.1 MI N of Santa Fe C/L · Structure no. 000000000006723

Built
1966
59 years old
Condition
Fair
inspected September 2022
Type
Culvert
Concrete
Length
25 ft
2 main spans
Daily traffic
8,574
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl/Sbl/Frtg over Unnamed Waterway is a concrete culvert carrying I-25 Nbl/Sbl/Frtg over Unnamed Waterway in San Miguel County, New Mexico. It was built in 1966, so it is 59 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 8,574 vehicles a day, roughly 45% of them trucks, projected to reach 11,660 by 2043. The structure is 25 ft (7.6 m) long. If it were closed, the detour would be 1.2 mi (2 km).

Location

Open in Google Maps
CarriesI-25 Nbl/Sbl/Frtg
CrossesUnnamed Waterway
Location15.1 MI N of Santa Fe C/L
RouteInterstate 25
CountySan Miguel County
StateNew Mexico
Coordinates35.41519, -105.53236
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.
Culvert6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionSeptember 2022
Inspection intervalevery 48 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating41.1 US tons
Inventory rating35.7 US tons

Structure

Structure typeCulvert
MaterialConcrete
DeckNot applicable
Main spans2
Design loadHS 20
Structure length25 ft (7.6 m)
Longest span10 ft (3 m)
Deck width0 ft (0 m)
Roadway width0 ft (0 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,574 (2023)
Projected traffic11,660 by 2043
Trucks45%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway
CrossesWaterway
Detour if closed1.2 mi (2 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/Frtg over Unnamed Waterway built?

It was built in 1966, making it 59 years old in 2025.

What condition is I-25 Nbl/Sbl/Frtg 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 September 2022.

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

About 8,574 vehicles per day (2023 count), of which roughly 45% are trucks.

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

The structure is 25 ft (7.6 m) long with a longest span of 10 ft (3 m).

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

It is owned by the State Highway Agency.