Structure BA23-23-15.5-80 · Baca County, CO

County Road 23 over Sand Arroyo

Carries County Road 23 over Sand Arroyo, 3.5 Mi S Of CR W.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT33 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 7/9Substructure 6/9 · sets the rating

33 ft end to end, longest span 6 ft. 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 deck arch.

Built193591 years old
Length32.8 ft10 m
Daily traffic14counted 2022
Last inspectedApril 2024every 24 months

Location

StateColorado
CountyBaca
Location3.5 Mi S Of CR W
CarriesCounty Road 23
CrossesSand Arroyo
Coordinates37.22874, -102.66959

Physical Characteristics

MaterialMasonry
DesignArch - Deck
Total Length32.8 ft (10 m)
Max Span5.9 ft (1.8 m)
Deck Width27.9 ft (8.5 m)
Deck Area85 sq m
Main Spans4
Year Built1935

Traffic

Avg Daily Traffic14 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionApril 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is possibly eligible (requires evaluation)
Scour Critical5 — Stable for scour
Structure NumberBA23-23-15.5-80

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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