• icon
  • icon


  1. Main and Secondary Road Widening, Repairs or Replacements
  2. Attaches directly to the left or right side of your motor grader moldboard
  3. The durable 5/8” thick moldboard can cut to depths of up to 14”
  4. One-pass operation

Road Widener Specification

CUTTING DEPTH(S)6" to 14" - Adjustable on Mounting Arm
CUTTING WIDTH @ 45°:20"29"
CUTTING WIDTH @ 0°:33"46"
Moldboard Construction
5/8" Plate with Double Wall Leading Edge, Reversible
Mounting Arm Construction1-7/8" X 4" with Cutting Depth Adjustments
Cutting Edge and End BladeCurved 3/4" X 6"

The Road Widener from Bonnell can be used for road widening projects, new construction, repairs, or replacements on both main and secondary roads. This heavy duty tool attaches directly to your motor grader moldboard on either the right or left side without any modification required. The cored material rolls off the end of the Road Widener, while the motor grader moldboard keeps the finish grade. The durable 5/8” thick moldboard can cut to depths of up to 14”. When used in conjunction with the Bonnell Flow Gate, the Road Widener will save you time and money on your next road widening project.