Job Safety Analysis: Ditching and Shoulder Cutting with a Grader

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Step Potential Hazard Control
Assess roadway, shoulder, and ditch conditions Soft shoulders, hidden drop offs, motorists entering work zone, poor sight distance Set cones and advance warning signs; use flaggers or pilot vehicles as needed; assign lookout; walk shoulder and ditch to identify hazards
Inspect grader and attachments Hydraulic leaks, damaged blades, malfunctioning controls, worn tires Perform full pre start inspection; test brakes, lights, articulation, and blade controls; remove unsafe equipment from service
Don required PPE Noise exposure, struck by hazards, eye injuries Wear all required PPE before entering the work zone or operating equipment
Establish communication protocols Miscommunication leading to struck by incidents with support crew or passing vehicles Use radios or hand signals; maintain visual contact; instruct crew to stay out of blind spots
Remove large debris before operation Strains, cuts, stepping into traffic Clear branches and rocks by hand tools; keep crew within protected work zone; ensure traffic control devices are in place
Begin ditching or shoulder cutting Grader sliding into ditch, blade striking hidden objects, thrown material hitting workers Operate at slow speed; take multiple shallow passes; identify and avoid soft or undermined edges; direct material away from workers
Work near ditch edges Equipment tip over, sudden soil collapse Keep safe distance from ditch; avoid steep angles; watch for saturated soil; never drive too close to drop offs
Adjust blade angle and pitch Flying debris, sudden machine movement Make gradual blade adjustments; keep ground crew clear of discharge path; monitor mirrors and cameras for surroundings
Coordinate with support crew (trucks, rakers, compactors) Crew entering blind spots, struck by moving equipment Maintain communication; position support vehicles where operator can see them; instruct ground crew to never walk beside or behind grader
Handle buildup of spoil material Piles creating hazards, debris rolling into roadway Push spoil to safe locations; create smooth transition zones; ensure spoil does not obstruct travel lanes
Compact or shape finished work (if required) Struck by roller, uneven footing, tool contact Maintain clear communication with roller operator; keep ground crew away from compaction path
Final inspection Loose material, drainage issues, unsafe transitions, debris left on roadway Walk or drive project area; verify ditch flow, slope, and shoulder height; remove any remaining debris
Remove traffic control Workers exposed to traffic during takedown Only remove cones and signs once equipment and crew are completely clear of roadway; use lookout during takedown

Suggested Personal Protective Equipment

  • Hard hat

  • Safety glasses

  • High visibility vest

  • Hearing protection

  • Steel toe boots

  • Gloves

  • Long pants and long sleeves

Always have a complete, well-stocked first aid kit available.

JSA Category: Roadway Maintenance Operations

* The steps, hazards, and controls displayed above may be incomplete or not suit your department's needs. All job safety analyses should be a completed with frontline worker input to ensure that each potential hazard is identified and mitigated.

Please read about The Essentials Elements of a Solid Job Safety Anaylsis here.

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Job Safety Analysis
Step Potential Hazard Control
Assess roadway, shoulder, and ditch conditions Soft shoulders, hidden drop offs, motorists entering work zone, poor sight distance Set cones and advance warning signs; use flaggers or pilot vehicles as needed; assign lookout; walk shoulder and ditch to identify hazards
Inspect grader and attachments Hydraulic leaks, damaged blades, malfunctioning controls, worn tires Perform full pre start inspection; test brakes, lights, articulation, and blade controls; remove unsafe equipment from service
Don required PPE Noise exposure, struck by hazards, eye injuries Wear all required PPE before entering the work zone or operating equipment
Establish communication protocols Miscommunication leading to struck by incidents with support crew or passing vehicles Use radios or hand signals; maintain visual contact; instruct crew to stay out of blind spots
Remove large debris before operation Strains, cuts, stepping into traffic Clear branches and rocks by hand tools; keep crew within protected work zone; ensure traffic control devices are in place
Begin ditching or shoulder cutting Grader sliding into ditch, blade striking hidden objects, thrown material hitting workers Operate at slow speed; take multiple shallow passes; identify and avoid soft or undermined edges; direct material away from workers
Work near ditch edges Equipment tip over, sudden soil collapse Keep safe distance from ditch; avoid steep angles; watch for saturated soil; never drive too close to drop offs
Adjust blade angle and pitch Flying debris, sudden machine movement Make gradual blade adjustments; keep ground crew clear of discharge path; monitor mirrors and cameras for surroundings
Coordinate with support crew (trucks, rakers, compactors) Crew entering blind spots, struck by moving equipment Maintain communication; position support vehicles where operator can see them; instruct ground crew to never walk beside or behind grader
Handle buildup of spoil material Piles creating hazards, debris rolling into roadway Push spoil to safe locations; create smooth transition zones; ensure spoil does not obstruct travel lanes
Compact or shape finished work (if required) Struck by roller, uneven footing, tool contact Maintain clear communication with roller operator; keep ground crew away from compaction path
Final inspection Loose material, drainage issues, unsafe transitions, debris left on roadway Walk or drive project area; verify ditch flow, slope, and shoulder height; remove any remaining debris
Remove traffic control Workers exposed to traffic during takedown Only remove cones and signs once equipment and crew are completely clear of roadway; use lookout during takedown
Suggested Personal Protective Equipment