M-29 | ||||
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M-29 highlighted in red
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Route information | ||||
Maintained by MDOT | ||||
Length: | 41.634 mi (67.003 km) | |||
Existed: | 1926 – present | |||
Major junctions | ||||
South end: | M-3 / I-94 in Chesterfield Township | |||
North end: | BL I-94 in Marysville | |||
Location | ||||
Counties: | Macomb, St. Clair | |||
Highway system | ||||
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M-29 is a state trunkline highway in the US state of Michigan that runs in a south–north direction from Chesterfield Township to Marysville. It generally runs along the shore of Lake St. Clair and the St. Clair River.
The M-29 designation has been used twice in Michigan starting in 1919. The first designation near Lansing was replaced by U.S. Route 27 (US 27) in 1926. At that time, the M-29 designation was moved to the east side of the state along the current routing and farther north along part of what became US 25 and M-25. The 1933 extension of US 25 replaced the northern section of M-29 leading to the current location of M-29.
The route generally follows the eastern border of the state along the northwest shore of Lake St. Clair and the western bank of the St. Clair River. From Algonac to its northern terminus in Marysville, M-29 is within a mile of Ontario, just across the river to the east. The route starts at an interchange with Interstate 94 (I-94) at exit 243. The road passes east through the residential areas of Chesterfield Township towards the shores of Lake St. Clair. Upon reaching the lake, the road turns to the northeast as it generally follows the contours of the lakeshore and St. Clair River further down. The road passes through New Baltimore and curves around the northern edge of Anchor Bay, which is part of Lake St. Clair. West of I-94, the route continues as 23 Mile Road.