US Bridges

I-25 Sbl over Kings Canyon

Fair

Sierra County, New Mexico · 6.3 M N JCT NM-152/I-25 · Structure no. 000000000006842

Built
1968
57 years old, rebuilt 2000
Condition
Fair
inspected February 2023
Type
Stringer/Multi-beam or Girder
Prestressed Concrete
Length
304 ft
5 main spans
Daily traffic
7,888
2023 count
Owner
State
State Highway Agency

About this bridge

I-25 Sbl over Kings Canyon is a prestressed concrete stringer/multi-beam or girder carrying I-25 Sbl over Kings Canyon in Sierra County, New Mexico. It was built in 1968 and reconstructed in 2000, so it is 57 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 7,888 vehicles a day, roughly 45% of them trucks, projected to reach 10,727 by 2043. The structure is 304 ft (92.7 m) long and 41 ft wide.

Location

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CarriesI-25 Sbl
CrossesKings Canyon
Location6.3 M N JCT NM-152/I-25
RouteInterstate 25
CountySierra County
StateNew Mexico
Coordinates33.04365, -107.31148
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.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionFebruary 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation6: Equal to present minimum criteria
Deck geometry6: Equal to present minimum criteria
Waterway adequacy6: Equal to present minimum criteria
Approach roadway alignment7: Better than present minimum criteria
Operating rating59.4 US tons
Inventory rating36 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialPrestressed Concrete
DeckConcrete, cast-in-place
Main spans5
Design loadHS 20
Structure length304 ft (92.7 m)
Longest span59 ft (18 m)
Deck width41 ft (12.5 m)
Roadway width38 ft (11.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic7,888 (2023)
Projected traffic10,727 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 Kings Canyon built?

It was built in 1968, making it 57 years old in 2025. It was reconstructed in 2000.

What condition is I-25 Sbl over Kings Canyon 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 2023.

How much traffic does I-25 Sbl over Kings Canyon carry?

About 7,888 vehicles per day (2023 count), of which roughly 45% are trucks.

How long is I-25 Sbl over Kings Canyon?

The structure is 304 ft (92.7 m) long with a longest span of 59 ft (18 m) and a deck 41 ft wide.

Who owns I-25 Sbl over Kings Canyon?

It is owned by the State Highway Agency.