MDOT RIP RAP Special: Custom: Ottawa Lake: MDOT Heavy RIP RAP: 16″ x 24″ Ottawa Lake: MDOT Plain RIP RAP: 8″ x 16″ Ottawa Lake: 1″ x 3″ Limestone: Stoneco Rail Operations Grand Rapids: 4″ x 8″ Ottawa Lake, Maybee, Stoneco Rail Operations Grand Rapids: MDOT 4G: 1 1/2″ x #30″ Newport, N Park Recycle Yard: MDOT 5G: 3/4″ x 1 1 ...