April 23:  Michigan Central Railroad reaches New Buffalo from Kalamazoo, the first railroad to cross the state.  [MCR-75/MDOT/AAD]

May 28:  The Michigan Central's first steamboat, the May Flower, sets sail for Buffalo from Detroit.  [EMR4]

The Michigan Southern is extended to Jonesville, after several years of no construction.  [AAD]

November 29:  Michigan Central Railroad schedules a 2nd train between Detroit and the west side of the state.  [DWS]

December 12:  After the last train passed, angry residents in Detroit pull up the Detroit and Pontiac's line down Gratiot Avenue, which had been an irritant during bad weather.  The tracks were relaid and torn up again.  The railroad was given a reprieve in 1852.  [HWC][AAD]

Lansing becomes the new state capital.  It is reached by stage coach from the Michigan Central via Jackson.  [AAD]

Erie & Kalamazoo RR leased to Michigan Southern RR - 5/25/1849 - [MDY33]

The Michigan Central builds new shops in Detroit (between 1848 and 1851).  [AAD]

Cliff (Copper) Mine, south of Eagle River pays its first dividend.  [MSL]