Structure 452 · Arenac County, MI

Foco Road over N Br Pine River

Carries Foco Road over N Br Pine River, 0.3 Mi S Of Us-23.

Overall conditionPoor

Set by its lowest-rated component: Substructure at 4 of 9.

How ratings work
Deck7/9 · Good
Superstructure7/9 · Good
Substructuresets the rating4/9 · Poor
Channelnot part of overall7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT48 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 7/9Superstructure 7/9Substructure 4/9 · sets the rating

48 ft end to end, longest span 24 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.

Built197452 years old
Length47.9 ft14.6 m
Daily traffic235counted 1998
Last inspectedAugust 2024every 12 months

Location

StateMichigan
CountyArenac
Location0.3 Mi S Of Us-23
CarriesFoco Road
CrossesN Br Pine River
Coordinates44.00168, -83.92690

Physical Characteristics

MaterialWood or Timber
DesignSlab
Total Length47.9 ft (14.6 m)
Max Span24.0 ft (7.3 m)
Deck Width29.2 ft (8.9 m)
Deck Area129.9 sq m
Main Spans2
Year Built1974

Traffic

Avg Daily Traffic235 (1998)
Lanes On Bridge2

Inspection & Ownership

Last InspectionAugust 2024
Inspection FrequencyEvery 12 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000000452

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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