Kolpack Construction & Supplies has a single review on MojoPages.com, and it's a positive review. Kolpack Construction & Supplies is located on 20159 Highway 108 in Sonora. Services offered include: Road Construction, Erosion Control, Culverts, Boulder Removals. They specialize in these structures and sites: Culverts. They can be contacted by calling (209) 532-3928 . .