Structure LR11C-0.7-24E-A · Larimer County, CO

County Road 11c over Boyd/horseshoe Canal

Carries County Road 11c over Boyd/horseshoe Canal, 1 Mi S Of Co RD 24e.

Overall conditionGood

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

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT44 FT ACROSS25 FT0ELEVATION · LENGTHS TO SCALE
Culvert 7/9

A culvert 44 ft across with 3 openings. 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, so those are drawn as typical for a culvert.

Built201511 years old
Length43.6 ft13.3 m
Daily traffic7,723counted 2023
Last inspectedJune 2023every 24 months

Location

StateColorado
CountyLarimer
Location1 Mi S Of Co RD 24e
CarriesCounty Road 11c
CrossesBoyd/horseshoe Canal
Coordinates40.43861, -105.04528

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length43.6 ft (13.3 m)
Max Span14.1 ft (4.3 m)
Deck Width39.0 ft (11.9 m)
Deck Area158.3 sq m
Main Spans3
Year Built2015

Traffic

Avg Daily Traffic7,723 (2023)
Truck Traffic27%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure NumberLR11C-0.7-24E-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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