Structure M-22-AY · Otero County, CO

SH 109 Ml over Rdwy Rr Arkansas Rvr

Carries SH 109 Ml over Rdwy Rr Arkansas Rvr, La Junta.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT1,448 FT OVERALL250 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

1,448 ft end to end, longest span 88 ft: about 4.0 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 multi-beam bridge.

Built196759 years old
Length1448.2 ft441.4 m
Daily traffic3,800counted 2020
Last inspectedApril 2024every 24 months

Location

StateColorado
CountyOtero
LocationLa Junta
CarriesSH 109 Ml
CrossesRdwy Rr Arkansas Rvr
Coordinates37.98786, -103.53182

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length1448.2 ft (441.4 m)
Max Span87.9 ft (26.8 m)
Deck Width36.1 ft (11 m)
Deck Area4855.4 sq m
Main Spans16
Year Built1967

Traffic

Avg Daily Traffic3,800 (2020)
Truck Traffic2%
Lanes On Bridge2
Lanes Under Bridge4

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberM-22-AY

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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