.Bonniecrete Construction. We Lift Sunken Concrete. Save Hundreds, Even Thousands of Dollars! Driveways, Garage Pads, Sidewalks, Patios, Steps, Porches, Eliminate Trip Spots, Provides Proper Slope & Drainage, Replaces Sand Base. Crack Repair. Enviromentally Friendly. Free Estimates. Your Sunken Concrete Specialist Ross 604-535-0124