US Bridges

I-25 Nbl over Sf Southern R/R

Poor

Santa Fe County, New Mexico · 0.2 MI S of ST Francis DR · Structure no. 000000000007501

Built
1974
51 years old
Condition
Poor
inspected April 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
171 ft
3 main spans
Daily traffic
34,354
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Nbl over Sf Southern R/R is a prestressed concrete stringer/multi-beam or girder carrying I-25 Nbl over Sf Southern R/R in Santa Fe 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 poor condition with a lowest component rating of 4 out of 9. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

It carries about 34,354 vehicles a day, roughly 14% of them trucks, projected to reach 46,721 by 2043. The structure is 171 ft (52.1 m) long and 45 ft wide.

Location

Open in Google Maps
CarriesI-25 Nbl
CrossesSf Southern R/R
Location0.2 MI S of ST Francis DR
RouteInterstate 25
CountySanta Fe County
StateNew Mexico
Coordinates35.63129, -105.96517
Functional classUrban Principal Arterial - Interstate

Condition and inspection

Poor

The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions.

ComponentRatingMeaning
Deck7 GoodSome minor problems.
Superstructure4 PoorAdvanced section loss, deterioration, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionApril 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation4: Meets minimum tolerable limits to be left in place as is
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating59.4 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans3
Design loadHS 20
Structure length171 ft (52.1 m)
Longest span55 ft (16.8 m)
Deck width45 ft (13.7 m)
Roadway width43 ft (13 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic34,354 (2023)
Projected traffic46,721 by 2043
Trucks14%
Lanes on structure2
Traffic directionOne-way traffic
CarriesHighway
CrossesRailroad
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 Sf Southern R/R built?

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

What condition is I-25 Nbl over Sf Southern R/R in?

The National Bridge Inventory rates it in poor condition. The lowest-rated primary component is rated 4 or below, indicating advanced deterioration. Poor does not mean unsafe; such bridges are inspected more often and may carry load restrictions. The last reported inspection was in April 2023.

How much traffic does I-25 Nbl over Sf Southern R/R carry?

About 34,354 vehicles per day (2023 count), of which roughly 14% are trucks.

How long is I-25 Nbl over Sf Southern R/R?

The structure is 171 ft (52.1 m) long with a longest span of 55 ft (16.8 m) and a deck 45 ft wide.

Who owns I-25 Nbl over Sf Southern R/R?

It is owned by the State Highway Agency.