St. Clair County, MI
14 public highway bridges
St. Clair County Bridge Snapshot
According to the Federal Highway Administration's 2024 National Bridge Inventory, St. Clair County, Michigan contains 14 public highway bridges. Roughly 42.9% are rated “Good,” 28.6% “Fair,” and 7.1% “Poor.” Poor means the lowest applicable deck, superstructure, substructure, or culvert rating is 4 or below on the 0–9 NBI scale. It is a condition category, not a live safety or closure decision.
Responsible agencies inspect covered bridges on risk-based intervals under current NBIS rules and submit inventory data to FHWA annually. The list below shows every NBI-tracked bridge in the county. Use the “Sort by” controls to change the ordering, and click any row for its reported inspection date, traffic count, and condition fields.
Source: FHWA National Bridge Inventory. See methodology for full definitions.
Condition Distribution
All Bridges (14)
MELDRUM RD
UnknownOver: I-94
4.3 MI NE OF MACOMB COL, St. Clair, MI
I-94 & I-69
UnknownOver: M-25 PINE GROVE AVE
PORT HURON @ PLAZA, St. Clair, MI
I-94 & I-69 EB
UnknownOver: BLACK RIVER & SCOTT AVE
W CITY LIMITS, St. Clair, MI
BRICKER ROAD
FairOver: MILL CREEK
SEC. 7-8 KENOCKEE TWP., St. Clair, MI
WESTRICK ROAD
FairOver: BELLE RIVER
SEC. 8 CHINA TWP., St. Clair, MI
VINE ROAD
FairOver: PINE RIVER
SEC 27 ST CLAIR TWP, St. Clair, MI
M-19
FairOver: COWHY DRAIN
N END OF M-19/I-69 INTRCH, St. Clair, MI
STAPLETON ROAD
GoodOver: UNNAMED CREEK
SEC. 31 KENOCKEE TWP., St. Clair, MI
LINDSEY ROAD
GoodOver: CASCO DRAIN
SEC 14-23 CASCO TWP, St. Clair, MI
COLONY DRIVE
GoodOver: UNNAMED CANAL
100FT W OF VAN DYKE, St. Clair, MI
WATER STREET
GoodOver: STOCKS CREEK
0.24 MI W OF W WATER ST, St. Clair, MI
COLONY DRIVE
GoodOver: UNNAMED CANAL
0.7 MI W OF VAN DYKE, St. Clair, MI
CAPAC ROAD
GoodOver: CAPAC DRAIN
340 FT S OF DONALD ROAD, St. Clair, MI
LONG ISLAND COURT
PoorOver: UNNAMED CANAL
SEC. 22 IRA TWP, St. Clair, MI
Read our methodology - how this data is sourced, computed, and verified.
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Every figure on PlainBridge is rendered directly from federal source data, no number is typed in by an editor. This page draws directly on federal source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.