Structure 1559 · Cheboygan County, MI

Lincoln Avenue over Cheboygan River

Carries Lincoln Avenue over Cheboygan River, Bet Secs 6t37nr1w&sec 31.

Overall conditionFair

Set by its lowest-rated component: Substructure at 6 of 9.

How ratings work
Superstructure7/9 · Good
Substructuresets the rating6/9 · Satisfactory
Channelnot part of overall8/9 · Very Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT380 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck not ratedSuperstructure 7/9Substructure 6/9 · sets the rating

380 ft end to end, longest span 63 ft: about 5 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 deck arch.

Built200719 years old
Length379.6 ft115.7 m
Daily traffic12,000counted 2000
Last inspectedJuly 2023every 24 months

Location

StateMichigan
CountyCheboygan
LocationBet Secs 6t37nr1w&sec 31
CarriesLincoln Avenue
CrossesCheboygan River
Coordinates45.63396, -84.48093

Physical Characteristics

MaterialConcrete
DesignArch - Deck
Total Length379.6 ft (115.7 m)
Max Span63.3 ft (19.3 m)
Deck Width60.0 ft (18.3 m)
Deck Area2117.3 sq m
Main Spans6
Year Built2007

Traffic

Avg Daily Traffic12,000 (2000)
Truck Traffic35%
Lanes On Bridge3

Inspection & Ownership

Last InspectionJuly 2023
Inspection FrequencyEvery 24 months
OwnerCity/Municipal Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000001559

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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