In 1854 when "the last rail was laid and the last spike driven in the Detroit and Milwaukee Railway between Detroit and Holly" the Oakland County Advertiser reported "great rejoicing among Hollyites who had lived so long in the woods." In 1858 Holly became Michigan's first railroad junction following the completion of a second track, the Flint and Holly Railway. Before long, both railroads had expanded and reorganized, becoming two of Michigan's leading lines, the Grand Trunk and the Pere Marquette. These routes connected Michigan's dense old growth pine forests to the industrial centers of the Midwest and Northeast. At the height of the railroad era, it was common to see more than one hundred trains pass through the Holly junction in a period of twenty-four hours.