US Bridges

NM-104 over I-25/R/R/CITY St/Waterwy

Fair

San Miguel County, New Mexico · 0.2 MI E of LOOP-15 · Structure no. 000000000007893

Built
1982
43 years old
Condition
Fair
inspected September 2024
Type
Stringer/Multi-beam or Girder
Steel Continuous
Length
1,380 ft
21 main spans
Daily traffic
3,419
2023 count
Owner
State
State Highway Agency

About this bridge

NM-104 over I-25/R/R/CITY St/Waterwy is a steel continuous stringer/multi-beam or girder carrying NM-104 over I-25/R/R/CITY St/Waterwy in San Miguel County, New Mexico. It was built in 1982, so it is 43 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 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 3,419 vehicles a day, roughly 5% of them trucks, projected to reach 4,649 by 2043. The structure is 1,380 ft (420.6 m) long and 95 ft wide. If it were closed, the detour would be 9.9 mi (16 km).

Location

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CarriesNM-104
CrossesI-25/R/R/CITY St/Waterwy
Location0.2 MI E of LOOP-15
RouteState Highway 104
CountySan Miguel County
StateNew Mexico
Coordinates35.596, -105.21043
Functional classUrban Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Superstructure7 GoodSome minor problems.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection7 GoodSome minor problems.
Last inspectionSeptember 2024
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour above top of footing
Structural evaluation6: Equal to present minimum criteria
Deck geometry9: Superior to present desirable criteria
Waterway adequacy9: Superior to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating53.6 US tons
Inventory rating35.7 US tons

Structure

Structure typeStringer/Multi-beam or Girder
MaterialSteel Continuous
DeckConcrete, cast-in-place
Main spans21
Design loadHS 20
Structure length1,380 ft (420.6 m)
Longest span102 ft (31.1 m)
Deck width95 ft (29 m)
Roadway width68 ft (20.7 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic3,419 (2023)
Projected traffic4,649 by 2043
Trucks5%
Lanes on structure4
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesHighway, waterway and railroad
Detour if closed9.9 mi (16 km)
TollOn a free road
National Highway SystemNo

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 NM-104 over I-25/R/R/CITY St/Waterwy built?

It was built in 1982, making it 43 years old in 2025.

What condition is NM-104 over I-25/R/R/CITY St/Waterwy 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 2024.

How much traffic does NM-104 over I-25/R/R/CITY St/Waterwy carry?

About 3,419 vehicles per day (2023 count), of which roughly 5% are trucks.

How long is NM-104 over I-25/R/R/CITY St/Waterwy?

The structure is 1,380 ft (420.6 m) long with a longest span of 102 ft (31.1 m) and a deck 95 ft wide.

Who owns NM-104 over I-25/R/R/CITY St/Waterwy?

It is owned by the State Highway Agency.