Michigan State Route 129 is a north-south highway in Eastern Mackinac County. It runs from the Mackinac/Chippewa County Line, south of Rockview, to Michgian State Route 134, at Cedarville. MI St Rt 134 passes through the following town in Mackinac County. Cedarville
MI St Rt 129 is not multi-plexed in Mackinac County. MI St Rt 129 intersects the following highways in Mackinack County. Michgian State Route 134, at Cedarville.
A junction marker on EB MI St Rt 134. NB MI St Rt 129 north of MI St Rt 134.