US-27 "Gap Signing" Proposal Map, 1991
Map courtesy AASHTO.
- Historic US-27 route listing–Overview
- Historic US-27 route listing–Route History
- I-69 route listing
- Michigan's Highways
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Route Listings- Individual Route Listings
- Routes 1-9
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- Routes 90-99
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- Business 2-31
- Business 32-94
- Business 96-496
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