the oldest concrete paved road in Michigan, 109 years and still useful... in a small town that hasn't upgraded a lot of things, like the stop signs and light poles

Detroit had paved some of Woodward Ave with the Granitoid method, but they had the funds to repave every 50 years or so, unlike the boomtown of Calumet, which never has been able to afford to resurface or replace the first paving of the 7th street of 1906. It was deemed historic in 1956 when the above historic marker was installed. Now it's obviously history and not likely to be replaced anytime soon, and 109 years of aging could be 129 years or more, as funds aren't likely to surprise anyone to have 7th st replaced

found on http://www.coppercountryexplorer.com/2013/01/the-centenarian-road/

because the city of Calumet is so old, and underfunded on typical civic improvements, light poles are also on the list of things that haven't ever been replaced

http://www.coppercountryexplorer.com/2011/11/a-calumet-light-pole/

http://www.coppercountryexplorer.com/2009/06/stop-sign/