UPDATE – M&N Main Line – Schwartzburg to Hilbert New information and photographs of Cedarburg, Wis., have been added to The Milwaukee & Northern Main Line from Schwartzburg Junction to Hilbert Junction page. The former M&N main line at Cedarburg, Wis., on 11 February 2021. Photograph by Tom Bruss.The former M&N main line at Cedarburg, Wis., on 11 February 2021. Photograph by Tom Bruss. You Might Also Like UPDATE – Main Line – Menominee River to Ontonagon July 17, 2022 UPDATE – Appleton Branch March 27, 2022 NEW – Support Us, Please November 27, 2023