Low clearance bridges in St. Clair County, Michigan

7 spots where an interstate or US highway in St. Clair County has less than 16 ft of clearance, lowest first. The lowest is 13 ft 5 in on I-94, At Port Huron. 1 is under 14 ft and 4 under 15 ft.

Posted signs and your permit come first. These are the clearances Michigan reported to the federal National Bridge Inventory in 2025. Repaving, snow and new work can lower them.

Map of St. Clair County, Michigan with a pin on each low spot.
Hover a pin to read it, tap it to find it in the list. © Mapbox © OpenStreetMap
ClearanceWhereHighway
13 ft 5 inOver St Clair River CN Railroad · At Port Huron · MapI-94
14 ft 6 inUnder Range Road · 1.0 mi W of I-94 · MapI-69
14 ft 7 inUnder Allen Road · 2.1 mi NW of I-94 · MapI-69
14 ft 9 inUnder Wadhams Road · 3.1 mi NW of I-94 · MapI-69
15 ft 5 inUnder I-94E RMP to I-69W · S End of Interchange · MapI-94
15 ft 10 inUnder Allington Road · 6.7 mi SW of M-25 · MapI-94
15 ft 10 inUnder Rattle Run Road · 5.1 mi SW of M-25 · MapI-94