Structure 7622 · Los Alamos County, NM

Nm501 over Omega Road West Road

Carries Nm501 over Omega Road West Road, Jct.nm501 And Omega Road.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
Substructuresets the rating5/9 · Fair
Channelnot part of overall9/9 · Excellent
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT820 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

820 ft end to end: about 2.3 football fields. Lengths and the semi-truck on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a deck arch.

Built1951rebuilt 1992
Length819.6 ft249.8 m
Daily traffic8,118counted 2022
Last inspectedJune 2024every 24 months

Location

StateNew Mexico
CountyLos Alamos
LocationJct.nm501 And Omega Road
CarriesNm501
CrossesOmega Road West Road
Coordinates35.88000, -106.32194

Physical Characteristics

MaterialSteel
DesignArch - Deck
Total Length819.6 ft (249.8 m)
Max Span442.6 ft (134.9 m)
Deck Width55.4 ft (16.9 m)
Deck Area4221.6 sq m
Main Spans1
Year Built1951 (reconstructed 1992)

Traffic

Avg Daily Traffic8,118 (2022)
Truck Traffic3%
Lanes On Bridge4
Lanes Under Bridge2

Inspection & Ownership

Last InspectionJune 2024
Inspection FrequencyEvery 24 months
OwnerCode 79
Historical SignificanceHistorical significance is not determined
Scour Critical9 — Foundation above flood level
Structure Number000000000007622

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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