06/03/2026
Did you know US-23 didn’t always hug Lake Huron? 🌊🛣️
Before the 1930s, “Old US-23” took a totally different route through Iosco County. When it was first commissioned in 1926, there was no shoreline highway yet. Picture is Old US 23 connection Tawas and Oscoda.
The original Tawas City → Oscoda route:
👉 West out of Tawas on what’s now M-55
👉 Up to Whittemore, then north on M-65
👉 Through Hale and into Au Sable/Oscoda
It completely skipped the lakeshore towns we know today — no East Tawas, no Au Gres, no Greenbush.
So what changed?
1932-1936: During the Depression, MDOT built the scenic shoreline route we drive now. It was a jobs project + tourism push for the Great Lakes.
Key dates:
📍 1932 – Au Gres to Tawas City segment opened
📍 1936 – Au Sable River Bridge in Oscoda completed the Tawas → Oscoda shoreline link
After that, US-23 jumped to the lake. The old inland route just became M-55 + M-65 again.
You can still find pieces today:
M-55 west of Tawas City = US-23 until 1936
M-65 Whittemore to Oscoda = US-23 until 1936
Keep an eye out around Whittemore & Hale — old concrete roadbed still hides in the woods 👀
Locals still call M-65 “Old 23”
The highway you take to the beach was literally built in the 1930s for tourists. Pretty wild.
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Visit our museum this summer https://www.ioscomuseum.com/