NAICS 237990

Other Heavy and Civil Engineering Construction contracts

Open federal opportunities classified under NAICS 237990.

101 opportunities open now

Presolicitation

Closes Jul 29, 2026

Maintenance Dredging, Wilmington Harbor Anchorage Basin and Mid River Channels

Dept of Defense

237990 · Other Heavy and Civil Engineering Cons… North Carolina Posted Apr 30, 2026

Set-asides used in this sector

Small Business8(a)HUBZoneSDVOSB

About NAICS 237990

Heavy and civil engineering construction not classified elsewhere — including dams, dredging, marine construction, and other heavy-civil works. Used for federal Corps of Engineers civil-works projects, port construction, and similar specialised infrastructure.

Typical award value: $2M – $250M+ per award.

Full NAICS 237990 guide →