Structure 10314 · St. Joseph County, MI

Covered Bridge RD over ST Joseph River

Carries Covered Bridge RD over ST Joseph River, 3 Mi North Of Centreville.

Overall conditionFair

Set by its lowest-rated component: Substructure at 5 of 9.

How ratings work
Deck8/9 · Very Good
Superstructure7/9 · Good
Substructuresets the rating5/9 · Fair
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT285 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 8/9Superstructure 7/9Substructure 5/9 · sets the rating

285 ft end to end, longest span 93 ft: about 4 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 through truss.

Built1885rebuilt 2023
Length284.8 ft86.8 m
Daily traffic1,144counted 2018
Last inspectedFebruary 2024every 21 months

Location

StateMichigan
CountySt. Joseph
Location3 Mi North Of Centreville
CarriesCovered Bridge RD
CrossesST Joseph River
Coordinates41.96721, -85.52821

Physical Characteristics

MaterialWood or Timber
DesignTruss - Thru
Total Length284.8 ft (86.8 m)
Max Span92.8 ft (28.3 m)
Deck Width20.3 ft (6.2 m)
Deck Area538.2 sq m
Main Spans3
Year Built1885 (reconstructed 2023)

Traffic

Avg Daily Traffic1,144 (2018)
Truck Traffic8%
Lanes On Bridge1

Inspection & Ownership

Last InspectionFebruary 2024
Inspection FrequencyEvery 21 months
OwnerCounty Highway Agency
Historical SignificanceBridge is on the National Register of Historic Places
Scour Critical5 — Stable for scour
Structure Number000000000010314

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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