Structure 6514 · Marquette County, MI

Us-41 over Nelson Creek Buried

Carries Us-41 over Nelson Creek Buried, 4.9 Mi NW Of Alger Col.

Overall conditionGood

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

How ratings work
Culvertsets the rating7/9 · Good
Channelnot part of overall5/9 · Fair
0 failed4 poor6 fair9 excellent

Elevation

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

A culvert 23 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.

Built193987 years old
Length22.6 ft6.9 m
Daily traffic3,609counted 2007
Last inspectedJuly 2024every 24 months

Location

StateMichigan
CountyMarquette
Location4.9 Mi NW Of Alger Col
CarriesUs-41
CrossesNelson Creek Buried
Coordinates46.32035, -87.18684

Physical Characteristics

MaterialConcrete
DesignCulvert
Total Length22.6 ft (6.9 m)
Max Span9.8 ft (3 m)
Deck Area80.0 sq m
Main Spans2
Year Built1939

Traffic

Avg Daily Traffic3,609 (2007)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalUnknown
Structure Number000000000006514

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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