 The road was originally part of the State Trunkline Highway System as M @-@ 35 . In 1919 , the highway was to run through the Huron Mountains in northern Marquette County . A bridge was moved from rural Pennsylvania in 1921 to carry the road over the Dead River . The Huron Mountain Club opposed the highway , and with the aid of Henry Ford , the road 's construction was stopped during the 1920s , leaving a gap in the routing through the mountains . In 1939 , the state transferred control of M @-@ 35 to local authorities , and the Marquette County Road Commission ( MCRC ) designated it CR 510 . Since that time , the bridge over the Dead River has survived a flood in 2003 , and it was bypassed in 2010 by a new section of road with another bridge over the river . 
