Job Description

JOB SUMMARY

The Finish Blade/Grader Equipment Operator III is responsible for the safe and efficient operation of a motor grader to perform fine grading and finishing of road bases, sub-grades, and surfaces to precise tolerances. As the highest level in the operator classification, this role requires significant expertise in interpreting blueprints, staking, and utilizing advanced technology to ensure proper drainage and structural integrity. The operator works with minimal supervision and is expected to exhibit leadership within the paving crew, ensuring that all work meets both Martin Marietta’s quality standards and OSHA safety regulations.

KEY DUTIES AND RESPONSIBILITIES

• Spread and level dirt, gravel, and stone to finish grade specifications for highways, streets, and subdivisions.
• Read and interpret project plans, blueprints, grade stakes, and 'blue tops' to determine required elevations and slopes.
• Operate equipment equipped with GPS, laser, or sonic grade control systems to achieve automated precision.
• Cut and maintain ditches and crowns to ensure proper water runoff and prevent erosion.
• Fine-grade aggregate to tolerances suitable for asphalt or concrete pavement application.
• Conduct comprehensive pre-shift and post-shift safety inspections (fluids, tires, blades, hydraulics) and document findings in maintenance logs.
• Perform minor field maintenance, including greasing, cleaning filters, and changing grader blades/cutting edges.
• Identify and avoid potential hazards such as utility lines, overhead obstructions, and ground personnel; maintain high situational awareness in high-traffic zones.
• Strictly adhere to all Martin Marietta safety policies, OSHA regulations, and environmental permits.
• Coordinate with loaders, haul trucks, and rollers via two-way radio to ensure efficient material flow and cycle times.
• Provide guidance and training to junior operators on equipment best practices and safety protocols.
• Perform auxiliary labor duties as needed, such as manual raking, shovel work, or operating secondary equipment (rollers, loaders, water trucks) during downtime.
• Ensure work sites are maintained with adequate berms and drainage to prevent erosion and meet environmental regulations.

QUALIFICATIONS

Education

High school diploma, GED, or relevant experience

Work Experience

3+ years of experience Operating Heavy Equipment, with a focus on Finish Blade/Fine Grading in a Paving or Heavy Highway environment, preferred.

Knowledge, Skills, and Abilities

OSHA compliance and regulations

GPS proficiency (3D grade control technology and interpreting digital site models)

Mechanical aptitude

Technical aptitude

Detail oriented

Time management

Effective communicator (written and spoken)

ADDITIONAL DETAILS

Physical Requirements

Must be able to lift and carry up to 50 lbs. for plant maintenance and equipment servicing.

Required to bend, stoop, climb, and reach. You must be able to maintain three points of contact when climbing on/off machinery or on ladders.

Strong hand-eye-foot coordination is essential for operating hand/foot controls. You must have good depth perception with or without seeing aid for distances up to 150 feet.

Working Conditions

All duties require outside assignments and require periods of work in all weather conditions, cold, wet, dry and dusty. Must be able to work in areas where noise levels are up to 85 dbs.