Structure 1387 · Calhoun County, MI

14 Mile Road over ST Joseph River

Carries 14 Mile Road over ST Joseph River, 2 Mi W Of Tekonsha.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure7/9 · Good
Channelnot part of overall6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT130 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 7/9

130 ft end to end. 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 box-beam bridge.

Built199432 years old
Length129.9 ft39.6 m
Daily traffic150counted 2021
Last inspectedSeptember 2024every 24 months

Location

StateMichigan
CountyCalhoun
Location2 Mi W Of Tekonsha
Carries14 Mile Road
CrossesST Joseph River
Coordinates42.09048, -85.02049

Physical Characteristics

MaterialPrestressed Concrete
DesignBox Beam - Multiple
Total Length129.9 ft (39.6 m)
Max Span129.9 ft (39.6 m)
Deck Width28.5 ft (8.7 m)
Deck Area344.5 sq m
Main Spans1
Year Built1994

Traffic

Avg Daily Traffic150 (2021)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionSeptember 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour Critical5 — Stable for scour
Structure Number000000000001387

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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