page_title: The Thumb
section_title: Transportation
hierarchical_section_title: The Thumb / Transportation
caption_attribution_description: Photo of 2nd Blue Water Bridge. U.S. Department of Transportation Federal Highway Administration Excellence in Highway Design 1998 Biennial Awards
context_page_description: The Thumb is a region and a peninsula of the U.S. state of Michigan, so named because the Lower Peninsula is shaped like a mitten. The Thumb area is generally considered to be in the Central Michigan region, located east of the Tri-Cities, and north of Metro Detroit. The region is also branded as the Blue Water Area of Michigan.
  The counties which constitute the Thumb are those forming the extended peninsula that stretches northward into Lake Huron and Saginaw Bay. There is no formal declaration for which of these counties are part of the Thumb. Virtually all definitions of The Thumb include Huron, Tuscola, and Sanilac counties, and most common definitions are extended to include Lapeer and St. Clair counties as well.
caption: Port Huron's two Blue Water Bridges, taken during the Port Huron to Mackinac Yacht Race
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