US Bridges

L-00012 over I-25 Nbl and Sbl

Fair

Socorro County, New Mexico · 11.2 M N JCT I-25/ US-380 · Structure no. 000000000007032

Built
1970
55 years old
Condition
Fair
inspected August 2023
Type
Box Beam or Girders - Single or Spread
Concrete Continuous
Length
301 ft
4 main spans
Daily traffic
8,881
2021 count
Owner
State
State Highway Agency

About this bridge

L-00012 over I-25 Nbl and Sbl is a concrete continuous box beam or girders - single or spread carrying L-00012 over I-25 Nbl and Sbl in Socorro County, New Mexico. It was built in 1970, so it is 55 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 8,881 vehicles a day, roughly 6% of them trucks, projected to reach 12,078 by 2041. The structure is 301 ft (91.7 m) long and 54 ft wide. If it were closed, the detour would be 3.7 mi (6 km).

Location

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CarriesL-00012
CrossesI-25 Nbl and Sbl
Location11.2 M N JCT I-25/ US-380
RouteState Highway 12
CountySocorro County
StateNew Mexico
Coordinates34.07634, -106.89326
Functional classUrban Other Principal Arterial

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.
Superstructure6 SatisfactoryStructural elements show some minor deterioration.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Last inspectionAugust 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourBridge not over waterway
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Approach roadway alignment5: Somewhat better than minimum adequacy to tolerate being left in place as is
Operating rating60.4 US tons
Inventory rating36.3 US tons

Structure

Structure typeBox Beam or Girders - Single or Spread
MaterialConcrete Continuous
DeckConcrete, cast-in-place
Main spans4
Design loadHS 20
Structure length301 ft (91.7 m)
Longest span104 ft (31.7 m)
Deck width54 ft (16.6 m)
Roadway width52 ft (16 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic8,881 (2021)
Projected traffic12,078 by 2041
Trucks6%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway
CrossesHighway
Detour if closed3.7 mi (6 km)
TollOn a free road
National Highway SystemYes

Ownership and planned work

OwnerState Highway Agency
Maintained byState Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$1.2 million
NavigationNot applicable (no waterway)

Frequently asked questions

When was L-00012 over I-25 Nbl and Sbl built?

It was built in 1970, making it 55 years old in 2025.

What condition is L-00012 over I-25 Nbl and Sbl 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 August 2023.

How much traffic does L-00012 over I-25 Nbl and Sbl carry?

About 8,881 vehicles per day (2021 count), of which roughly 6% are trucks.

How long is L-00012 over I-25 Nbl and Sbl?

The structure is 301 ft (91.7 m) long with a longest span of 104 ft (31.7 m) and a deck 54 ft wide.

Who owns L-00012 over I-25 Nbl and Sbl?

It is owned by the State Highway Agency.