Structure L-13-A · Saguache County, CO

US 285 Ml over Kerber Creek

Carries US 285 Ml over Kerber Creek, 0.1 Mi N Of Villa Grove.

Overall conditionGood

Set by its lowest-rated component: Culvert at 7 of 9.

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
21 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 21 ft across with 2 openings. Lengths are drawn to scale; at this length a semi-truck would be a speck. Each part is colored by its latest inspection rating. The inventory records lengths but not heights, so those are drawn as typical for a culvert.

Built197056 years old
Length21.0 ft6.4 m
Daily traffic3,200counted 2020
Last inspectedJuly 2023every 24 months

Location

StateColorado
CountySaguache
Location0.1 Mi N Of Villa Grove
CarriesUS 285 Ml
CrossesKerber Creek
Coordinates38.25008, -105.95002

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length21.0 ft (6.4 m)
Max Span9.5 ft (2.9 m)
Deck Width44.0 ft (13.4 m)
Deck Area85.8 sq m
Main Spans2
Year Built1970

Traffic

Avg Daily Traffic3,200 (2020)
Truck Traffic11%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberL-13-A

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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