Structure 1819 · Clinton County, MI

Clark Road over Us-127 & I-69 C-d/ramps

Carries Clark Road over Us-127 & I-69 C-d/ramps, 0.4 Mi N Of I-69.

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 FT481 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 6/9 · sets the ratingSubstructure 7/9

481 ft end to end, longest span 104 ft: about 7 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.

Built199432 years old
Length481.0 ft146.6 m
Daily traffic7,500counted 1994
Last inspectedMay 2024every 24 months

Location

StateMichigan
CountyClinton
Location0.4 Mi N Of I-69
CarriesClark Road
CrossesUs-127 & I-69 C-d/ramps
Coordinates42.81306, -84.51101

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length481.0 ft (146.6 m)
Max Span104.3 ft (31.8 m)
Deck Width51.2 ft (15.6 m)
Deck Area2287.0 sq m
Main Spans6
Year Built1994

Traffic

Avg Daily Traffic7,500 (1994)
Truck Traffic5%
Lanes On Bridge2
Lanes Under Bridge8

Inspection & Ownership

Last InspectionMay 2024
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceHistorical significance is not determined
Scour CriticalNot applicable
Structure Number000000000001819

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.

Nearby Bridges