Structure KITC-NN-1.60-01 · Kit Carson County, CO

County Road Nn over S.fork Arikaree River

Carries County Road Nn over S.fork Arikaree River, 2.4 Miles West Of Road 4.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 7 of 9.

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

Elevation

Side view, colored by inspection rating
CAR · 15 FT40 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 7/9

40 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 multi-beam bridge.

Built195967 years old
Length40.4 ft12.3 m
Daily traffic10counted 2022
Last inspectedDecember 2023every 24 months

Location

StateColorado
CountyKit Carson
Location2.4 Miles West Of Road 4
CarriesCounty Road Nn
CrossesS.fork Arikaree River
Coordinates39.54950, -103.12497

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length40.4 ft (12.3 m)
Max Span39.4 ft (12 m)
Deck Width20.0 ft (6.1 m)
Deck Area75.0 sq m
Main Spans1
Year Built1959

Traffic

Avg Daily Traffic10 (2022)
Lanes On Bridge2

Inspection & Ownership

Last InspectionDecember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure NumberKITC-NN-1.60-01

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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