Kolb Grading worked as a General Contractor on Route 100 near Washington, Missouri, performing clearing, Class A and Class C excavation, and utility installation. The scope included 530,598 cubic yards of Class A and 313,827 cubic yards of Class C excavation, 213,178 square yards of 18-inch rock base produced from drilling and blasting, Class B concrete culverts, and concrete pipe and culverts ranging from 12 to 36 inches.
Scope of Work
- Furnished 11,000 sy of rock base material from drilling and blasting
- 530,598 cy of Class A excavation
- 313,827 cy of Class C excavation
- Placed 213,178 sy of rock base, 18” thick
- Class B concrete culverts
- Installed concrete pipe and culverts ranging from 12” to 36”

