Structure 8990 · Presque Isle County, MI

Ocqueoc Lake Road over Ocqueoc River

Carries Ocqueoc Lake Road over Ocqueoc River, Sec 19 T36n R3e.

Overall conditionFair

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

How ratings work
Decksets the rating6/9 · Satisfactory
Superstructuresets the rating6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT114 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9 · sets the ratingSuperstructure 6/9 · sets the ratingSubstructure 7/9

114 ft end to end, longest span 38 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 box-beam bridge.

Built197650 years old
Length113.8 ft34.7 m
Daily traffic410counted 2007
Last inspectedSeptember 2023every 24 months

Location

StateMichigan
CountyPresque Isle
LocationSec 19 T36n R3e
CarriesOcqueoc Lake Road
CrossesOcqueoc River
Coordinates45.48061, -84.11008

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length113.8 ft (34.7 m)
Max Span37.7 ft (11.5 m)
Deck Width33.5 ft (10.2 m)
Deck Area353.9 sq m
Main Spans3
Year Built1976

Traffic

Avg Daily Traffic410 (2007)
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2023
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000008990

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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