NAICS + PSC page

NAICS 237990 and PSC Z1KF contractors

Other Heavy and Civil Engineering Construction. MAINTENANCE OF DREDGING FACILITIES. Use this cross-code page to see which visible federal contractors sit in the overlap between these two public category lanes.

NAICS 237990 + PSC Z1KF
Last updated: April 8, 2026

Visible recipients

4

Mapped obligations

$4,681,771,522

State overlap

0

Top recipients

Visible recipients in the NAICS 237990 and PSC Z1KF overlap

Manson Construction CO

Seattle, WA

Manson Construction CO is a federal category business profile based in Seattle, WA. The current public data layer shows $223,706,344 in visible federal obligations across 86 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 237990 (Other Heavy and Civil Engineering Construction). The profile also shows meaningful product and service activity in PSC Y1KF.

$4,384,336,253

Ahtna Marine & Construction Company, LLC

Boynton Beach, FL

Ahtna Marine & Construction Company, LLC is a federal 8a program participant profile based in Boynton Beach, FL. The current public data layer shows $4,412,554 in visible federal obligations across 15 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 237990 (Other Heavy and Civil Engineering Construction). The profile also shows meaningful product and service activity in PSC Z1KF.

$104,221,238

Ahtna Design-build INC

West Sacramento, CA

Ahtna Design-build INC is a federal 8a program participant profile based in West Sacramento, CA. The current public data layer shows $2,082,852 in visible federal obligations across 10 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 236220 (Commercial and Institutional Building Construction). The profile also shows meaningful product and service activity in PSC Y1JZ.

$57,895,988

Healy Tibbitts Builders, Inc.

Aiea, HI

Healy Tibbitts Builders, Inc. is a federal category business profile based in Aiea, HI. The current public data layer shows $557,260 in visible federal obligations across 5 awards or transactions. Department of Defense appears as the strongest visible awarding agency. Top industry concentration is in NAICS 237990 (Other Heavy and Civil Engineering Construction). The profile also shows meaningful product and service activity in PSC Z1KF.

$135,318,043