Structure 9341 · Saginaw County, MI

Dehmel Road over Cass River

Carries Dehmel Road over Cass River, 0.5 Mi N Of Curtis Road.

Overall conditionFair

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

How ratings work
Deck6/9 · Satisfactory
Superstructure6/9 · Satisfactory
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 FT564 FT OVERALL100 FT0ELEVATION · LENGTHS TO SCALE
Deck 6/9Superstructure 6/9Substructure 5/9 · sets the rating

564 ft end to end, longest span 94 ft: about 1.6 football fields. 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.

Built198244 years old
Length564.0 ft171.9 m
Daily traffic2,919counted 2007
Last inspectedJuly 2024every 24 months

Location

StateMichigan
CountySaginaw
Location0.5 Mi N Of Curtis Road
CarriesDehmel Road
CrossesCass River
Coordinates43.32820, -83.75820

Physical Characteristics

MaterialPrestressed Concrete
DesignStringer/Multi-beam
Total Length564.0 ft (171.9 m)
Max Span93.8 ft (28.6 m)
Deck Width40.0 ft (12.2 m)
Deck Area2097.2 sq m
Main Spans6
Year Built1982

Traffic

Avg Daily Traffic2,919 (2007)
Truck Traffic5%
Lanes On Bridge2

Inspection & Ownership

Last InspectionJuly 2024
Inspection FrequencyEvery 24 months
OwnerCounty Highway Agency
Historical SignificanceHistorical significance is not determined
Scour Critical4 — Foundations need monitoring
Structure Number000000000009341

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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