Structure 8661 · Oscoda County, MI

Park Road over East Br Big Creek

Carries Park Road over East Br Big Creek, Sec 25 Big Creek Twp.

Overall conditionGood

Set by its lowest-rated component: Deck and Superstructure and Substructure at 8 of 9.

How ratings work
Decksets the rating8/9 · Very Good
Superstructuresets the rating8/9 · Very Good
Substructuresets the rating8/9 · Very Good
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT50 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 8/9Substructure 8/9

50 ft end to end, longest span 26 ft. 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 slab bridge.

Built20188 years old
Length49.9 ft15.2 m
Daily traffic500counted 2016
Last inspectedOctober 2023every 24 months

Location

StateMichigan
CountyOscoda
LocationSec 25 Big Creek Twp
CarriesPark Road
CrossesEast Br Big Creek
Coordinates44.61597, -84.26696

Physical Characteristics

MaterialWood or Timber
DesignSlab
Total Length49.9 ft (15.2 m)
Max Span25.9 ft (7.9 m)
Deck Width48.9 ft (14.9 m)
Deck Area226.5 sq m
Main Spans3
Year Built2018

Traffic

Avg Daily Traffic500 (2016)
Truck Traffic10%
Lanes On Bridge2

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical8 — Stable, low risk
Structure Number000000000008661

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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