Structure 4449 · Jackson County, MI

Us-127 NB over I-94 Bl

Carries Us-127 NB over I-94 Bl, @ I-94 Bl.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT168 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

168 ft end to end, longest span 95 ft: about 2 semi-trucks nose to tail. 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 box-beam bridge.

Built200125 years old
Length167.7 ft51.1 m
Daily traffic13,207counted 2007
Last inspectedJune 2023every 24 months

Location

StateMichigan
CountyJackson
Location@ I-94 Bl
CarriesUs-127 NB
CrossesI-94 Bl
Coordinates42.25766, -84.35689

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length167.7 ft (51.1 m)
Max Span95.1 ft (29 m)
Deck Width46.6 ft (14.2 m)
Deck Area725.6 sq m
Main Spans3
Year Built2001

Traffic

Avg Daily Traffic13,207 (2007)
Truck Traffic18%
Lanes On Bridge2
Lanes Under Bridge5

Inspection & Ownership

Last InspectionJune 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000004449

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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