Structure 3753 · Ingham County, MI

I-496 WB over Red Cedar River & Ramp V

Carries I-496 WB over Red Cedar River & Ramp V, W Lts Of E Lansing.

Overall conditionFair

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

How ratings work
Deck7/9 · Good
Superstructuresets the rating5/9 · Fair
Substructure6/9 · Satisfactory
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT412 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 5/9 · sets the ratingSubstructure 6/9

412 ft end to end, longest span 140 ft: about 6 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 multi-beam bridge.

Built1970rebuilt 1994
Length412.4 ft125.7 m
Daily traffic39,163counted 2019
Last inspectedFebruary 2025every 24 months

Location

StateMichigan
CountyIngham
LocationW Lts Of E Lansing
CarriesI-496 WB
CrossesRed Cedar River & Ramp V
Coordinates42.72429, -84.51234

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length412.4 ft (125.7 m)
Max Span139.8 ft (42.6 m)
Deck Width61.4 ft (18.7 m)
Deck Area2350.6 sq m
Main Spans4
Year Built1970 (reconstructed 1994)

Traffic

Avg Daily Traffic39,163 (2019)
Truck Traffic4%
Lanes On Bridge3
Lanes Under Bridge1

Inspection & Ownership

Last InspectionFebruary 2025
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000003753

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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