Structure 11358 · Wayne County, MI

Beck Road over M-14

Carries Beck Road over M-14, 1.0 Mi W. Of Plymouth.

Overall conditionFair

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

How ratings work
Decksets the rating5/9 · Fair
Superstructure6/9 · Satisfactory
Substructure6/9 · Satisfactory
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
SEMI-TRUCK · 72 FT276 FT OVERALL50 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 6/9Substructure 6/9

276 ft end to end, longest span 141 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 multi-beam bridge.

Built197650 years old
Length275.9 ft84.1 m
Daily traffic65,500counted 2006
Last inspectedOctober 2023every 24 months

Location

StateMichigan
CountyWayne
Location1.0 Mi W. Of Plymouth
CarriesBeck Road
CrossesM-14
Coordinates42.38246, -83.51008

Physical Characteristics

MaterialSteel
DesignStringer/Multi-beam
Total Length275.9 ft (84.1 m)
Max Span141.1 ft (43 m)
Deck Width93.5 ft (28.5 m)
Deck Area2396.8 sq m
Main Spans2
Year Built1976

Traffic

Avg Daily Traffic65,500 (2006)
Truck Traffic10%
Lanes On Bridge6
Lanes Under Bridge8

Inspection & Ownership

Last InspectionOctober 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number000000000011358

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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