Materials Inspector Series (ABET) - St. Louis District

State of Missouri; Chesterfield (MO); On-site; USD 52,000 - 76,000; Full time

Benefits offered by this job

Pension plan

Paid leave and holidays

Health insurance

Job summary

Missouri Department of Transportation (MoDOT) is seeking a Materials Inspector for the St. Louis District Office in Chesterfield, MO.

This CAREER-LADDER position offers opportunities for advancement as you gain experience and skills, with work performed under moderate supervision. You will sample and test construction materials like steel, pipe, paint, asphalt, and cement to ensure conformity with specifications and approve or reject materials for use in state highway projects.

Qualifications

• Bachelor's degree in engineering from an ABET-accredited college or university.
• OSHA 10-Hour Certification required within 90 days.
• Certification to operate nuclear gauges may be required.
• Successful completion of a work simulation examination and a medical-physical examination.

Responsibilities

• Samples and tests general construction materials (steel, pipe, paint, asphalt, cement) to ensure conformance to specifications and approve/reject material.
• Sample and test aggregate production for quality and gradation at quarries supplying materials.
• Prepare samples for bituminous trial mixes and coordinate with contractor on trial mix information.
• Perform duties of inspector in charge at plants producing bituminous mixtures to determine conformity and approve/reject material.
• Inspect prestressed or precast concrete and perform special sampling and testing on federal aid projects.

Education

ABET-accredited engineering degree

OSHA 10-Hour Certification

Nuclear gauges certification (may be required)

Job description

Posting closes 11/06/2026

Note for internal applicants: Successful candidates already at rates above the posted salary will be evaluated on an individual basis to determine final salary outcome.

Job Location: Materials Department - St. Louis District Office - 1590 Woodlake Drive, Chesterfield, MO 63017

Why You’ll love this Position

The materials inspector samples and tests general construction and maintenance materials to ensure that materials and products used in state highway construction and maintenance activities comply with specifications. Responsibilities are performed under moderate supervision.

MoDOT will bring candidates onto the team as entry-level, intermediate or senior level, based on your skills and experience. This opening is for one of our CAREER-LADDER positions which offers the opportunity for career advancement without having to participate in the competitive selection interview process. As you continue to learn, acquire new skills, and gain experience, you can be promoted to a higher-level position.

What You’ll Do

• Samples and tests general construction materials such as steel, pipe, paint, asphalt, and cement to determine if materials conform to specifications and approves/rejects material for intended use.
• Samples and tests fine and course aggregate production for quality and gradation specification compliance at quarries supplying materials for department projects and approves/rejects material.
• Prepares samples for bituminous trial mixes; coordinates with contractor on trial mix information.
• May perform duties of inspector in charge at plants producing bituminous mixtures to determine if the material produced conforms to specifications and approves or rejects the material.
• May perform inspections of prestressed or precast concrete and special sampling and testing of materials required on federal aid projects.

Minimum Qualifications

• Bachelor's degree in engineering from an ABET-accredited college or university curriculum.
• Certification to operate nuclear gauges may be required.
• OSHA 10-Hour Certification required within 90 days.
• Successful completion of a work simulation examination and a medical-physical examination.

Special Working Conditions

• Job requires moderate physical activity.
• Job requires exposure to physical hazards, health and safety risks, and/or adverse or otherwise undesirable characteristics in the environment.
• Job may require operation of vehicles to plow snow and spread ice control materials.
• A postsecondary degree is the best measure to ensure candidates possess required engineering knowledge, including in applied physics and mathematics, drafting, engineering processes and procedures, project management, industry ethical standards, and analyzing and modeling data.

Preferred Qualifications:

MoDOT is looking for team members who align with our preferred employee qualities. Preferred Employee Qualities | Missouri Department of Transportation

More Reasons To Love This Position

• MoDOT offers an excellent benefits package that includes a defined pension plan, generous amounts of leave and holiday time, and eligibility for health insurance coverage.

This tool provides a comprehensive view of benefits and more that are offered to prospective employees.

At MoDOT you will play a key role in maintaining the seventh largest highway system in the United States. We value team players who are open-minded and work well with others to accomplish goals and fulfill our mission of safety, service, and stability. We see the growth of our team members as an investment, both in MoDOT's future and yours. If you're looking for diverse opportunities, challenging work, and a flexible environment, we want to talk to you about joining our winning team. MoDOT operates on shared values and your success in our organization depends upon modeling these values. If you embrace these values, we welcome your application.

If you have questions about this position, please contact: [e-mail]

The State of Missouri is an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees.