Department of Transportation NAICS 541350 and PSC R425 contractors

Building Inspection Services. SUPPORT- PROFESSIONAL: ENGINEERING/TECHNICAL. 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 541350 · PSC R425

Last updated: April 4, 2026

Visible recipients

Mapped obligations

$524,207,877

State overlap

Top recipients

Visible recipients in the Department of Transportation overlap of NAICS 541350 and PSC R425

Karsun Solutions LLC

Herndon, VA

Karsun Solutions LLC is a federal category business profile based in Herndon, VA. The current public data layer shows $83,844,223 in visible federal obligations across 125 awards or transactions. Department of Transportation appears as the strongest visible awarding agency. Top industry concentration is in NAICS 541519 (Other Computer Related Services). The profile also shows meaningful product and service activity in PSC R425.

$524,207,877