Structure 9673 · Schoolcraft County, MI

Us-2 over Manistique River

Carries Us-2 over Manistique River, In Manistique.

Overall conditionFair

Set by its lowest-rated component: Deck and Superstructure and Substructure at 6 of 9.

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT679 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 6/9

679 ft end to end, longest span 160 ft: about 1.9 football fields. Lengths and the semi-truck 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.

Built198343 years old
Length678.8 ft206.9 m
Daily traffic4,300counted 2013
Last inspectedSeptember 2023every 24 months

Location

StateMichigan
CountySchoolcraft
LocationIn Manistique
CarriesUs-2
CrossesManistique River
Coordinates45.95373, -86.24931

Physical Characteristics

MaterialSteel Continuous
DesignStringer/Multi-beam
Total Length678.8 ft (206.9 m)
Max Span159.8 ft (48.7 m)
Deck Width57.7 ft (17.6 m)
Deck Area3641.4 sq m
Main Spans5
Year Built1983

Traffic

Avg Daily Traffic4,300 (2013)
Truck Traffic15%
Lanes On Bridge3

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical3 — Scour critical
Structure Number000000000009673

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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