Structure 57004101.30032 · Jackson County, CO

County Road 41 over N. Fork Michigan River

Carries County Road 41 over N. Fork Michigan River, 1.3 Mi E Of S.h. 14.

Overall conditionFair

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

How ratings work
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
20 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 7/9Substructure 5/9 · sets the rating

20 ft end to end. 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 or the layout of the shorter spans, so those are drawn as typical for a rigid-frame bridge.

Built200620 years old
Length20.3 ft6.2 m
Daily traffic184counted 2023
Last inspectedNovember 2024every 24 months

Location

StateColorado
CountyJackson
Location1.3 Mi E Of S.h. 14
CarriesCounty Road 41
CrossesN. Fork Michigan River
Coordinates40.54936, -106.02120

Physical Characteristics

MaterialSteel
DesignFrame
Total Length20.3 ft (6.2 m)
Max Span20.3 ft (6.2 m)
Deck Width27.9 ft (8.5 m)
Deck Area52.7 sq m
Main Spans1
Year Built2006

Traffic

Avg Daily Traffic184 (2023)
Truck Traffic17%
Lanes On Bridge2

Inspection & Ownership

Last InspectionNovember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number57004101.30032

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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