Department of Transportation NAICS 541710 and PSC R421 contractors

Research and Development in the Physical, Engineering, and Life Sciences. TECHNICAL ASSISTANCE. Use this deeper buyer cross-code page to see which visible contractors sit in the overlap between these two lanes under Department of Transportation.

Department of Transportation · NAICS 541710 · PSC R421

Last updated: April 8, 2026

Visible recipients

Mapped obligations

$67,496,178

State overlap

Top recipients

Visible recipients in the Department of Transportation overlap of NAICS 541710 and PSC R421

The Cadmus Group LLC

Arlington, VA

The Cadmus Group LLC is a federal category business profile based in Arlington, VA. The current public data layer shows $26,069,830 in visible federal obligations across 289 awards or transactions. Environmental Protection Agency appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541620 (Environmental Consulting Services). The profile also shows meaningful product and service activity in PSC R499.

$67,496,178