Structure 10518 · Tuscola County, MI

Dodge Road over White Creek I/c Drain

Carries Dodge Road over White Creek I/c Drain, Sec 30 Novesta Twp.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructuresets the rating5/9 · Fair
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT61 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 5/9 · sets the ratingSubstructure 7/9

61 ft end to end. Lengths and the car 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.

Built197848 years old
Length61.4 ft18.7 m
Daily traffic420counted 2009
Last inspectedJuly 2023every 24 months

Location

StateMichigan
CountyTuscola
LocationSec 30 Novesta Twp
CarriesDodge Road
CrossesWhite Creek I/c Drain
Coordinates43.52084, -83.23006

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length61.4 ft (18.7 m)
Max Span60.0 ft (18.3 m)
Deck Width36.7 ft (11.2 m)
Deck Area209.4 sq m
Main Spans1
Year Built1978

Traffic

Avg Daily Traffic420 (2009)
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000010518

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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