Structure 7052 · Otero County, NM

Fl-4920 over Mckinley Ditch

Carries Fl-4920 over Mckinley Ditch, 1.2 Mi N 1st/alamogordo.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT28 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 6/9

28 ft end to end. Lengths and the car 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 tee-beam bridge.

Built194086 years old
Length27.9 ft8.5 m
Daily traffic7,578counted 2023
Last inspectedJune 2023every 24 months

Location

StateNew Mexico
CountyOtero
Location1.2 Mi N 1st/alamogordo
CarriesFl-4920
CrossesMckinley Ditch
Coordinates32.90443, -105.92570

Physical Characteristics

MaterialPrestressed Concrete
DesignTee Beam
Total Length27.9 ft (8.5 m)
Max Span24.0 ft (7.3 m)
Deck Width95.1 ft (29 m)
Deck Area246.5 sq m
Main Spans1
Year Built1940

Traffic

Avg Daily Traffic7,578 (2023)
Truck Traffic5%
Lanes On Bridge4

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000000007052

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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