Structure 20903000001029 · Conejos County, CO

Fdr 260 over Alamosa River

Carries Fdr 260 over Alamosa River, 17 Mi Ssw Of Monte Vista.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT43 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 7/9Substructure 5/9 · sets the rating

43 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 girder bridge.

Built1933rebuilt 1992
Length43.0 ft13.1 m
Daily traffic18counted 2002
Last inspectedJuly 2023every 24 months

Location

StateColorado
CountyConejos
Location17 Mi Ssw Of Monte Vista
CarriesFdr 260
CrossesAlamosa River
Coordinates37.38975, -106.37842

Physical Characteristics

MaterialSteel
DesignGirder and Floorbeam
Total Length43.0 ft (13.1 m)
Max Span40.0 ft (12.2 m)
Deck Width15.4 ft (4.7 m)
Deck Area61.6 sq m
Main Spans1
Year Built1933 (reconstructed 1992)

Traffic

Avg Daily Traffic18 (2002)
Lanes On Bridge1

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerU.S. Forest Service
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure Number020903000001029

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.