Structure LJ 4-THIRD ST. · Otero County, CO

Third Street over Anderson Arroyo

Carries Third Street over Anderson Arroyo, 300 Ft W Of Maple Avenue.

Overall conditionPoor

Set by its lowest-rated component: Superstructure at 4 of 9.

How ratings work
Deck6/9 · Satisfactory
Superstructuresets the rating4/9 · Poor
Substructure5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT123 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 4/9 · sets the ratingSubstructure 5/9

123 ft end to end, longest span 39 ft. 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 multi-beam bridge.

Built1931rebuilt 1934
Length122.7 ft37.4 m
Daily traffic3,981counted 2022
Last inspectedNovember 2024every 12 months

Location

StateColorado
CountyOtero
Location300 Ft W Of Maple Avenue
CarriesThird Street
CrossesAnderson Arroyo
Coordinates37.98597, -103.55217

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length122.7 ft (37.4 m)
Max Span39.0 ft (11.9 m)
Deck Width50.2 ft (15.3 m)
Deck Area572.2 sq m
Main Spans3
Year Built1931 (reconstructed 1934)

Traffic

Avg Daily Traffic3,981 (2022)
Truck Traffic7%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 12 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure NumberLJ 4-THIRD ST.

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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