Sigma provides engineering services for transportation infrastructure design and construction.

Our firm supports local, state, and federal agencies with optimizing mobility, accessibility and reliability of their public transit, road and bridge, aviation, and rail systems. Sigma’s engineers and trained technicians possess the knowledge for expediting permitting processes and ensuring conformance with regulatory compliance requirements. Our experience enables us to deliver accepted design standards which are critical in facilitating efficient and cost-effective results for project needs.

We deliver planning, design and construction assistance services associated with the following:

  • Interchange Improvements
  • Interstate Reconstruction
  • Roadway Improvements
  • Bridges
  • Maintenance of Traffic

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With resources throughout the United States and our offices in the Midwest and Mid-Atlantic, we possess the capabilities to mobilize quickly to service our clients' needs.

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Our Services

Sigma utilizes a diverse, multi-disciplinary workforce, who effectively address client issues and deliver results which enhance reliability and performance.

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Experience. Accountability. Quality.

Delivering engineering support throughout all phases of a project from concept, planning and design, through integration, construction, startup, training, and on-call maintenance.

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