SIC 1629 — Heavy Construction NEC
Description & Classification
SIC code 1629 representing 'Heavy Construction NEC' is an industry category in the Standard Industrial Classification (SIC) system under U.S. OSHA and Federal procurement registers.
Modern NAICS Crosswalk
Trace the modern equivalent classifications in the 2022 North American Industry Classification System (NAICS) database:
- NAICS 236210 - Industrial Building Construction (via SIC1987:1629→NAICS1997:23499→2002:236210→2007:236210→2012:236210→2017:236210→2022:236210)
- NAICS 238990 - All Other Specialty Trade Contractors (via SIC1987:1629→NAICS1997:23499→2002:238990→2007:238990→2012:238990→2017:238990→2022:238990)
- NAICS 237990 - Other Heavy and Civil Engineering Construction (via SIC1987:1629→NAICS1997:23499→2002:237990→2007:237990→2012:237990→2017:237990→2022:237990)
- NAICS 238910 - Site Preparation Contractors (via SIC1987:1629→NAICS1997:23499→2002:238910→2007:238910→2012:238910→2017:238910→2022:238910)
- NAICS 237110 - Water and Sewer Line and Related Structures Construction (via SIC1987:1629→NAICS1997:23499→2002:237110→2007:237110→2012:237110→2017:237110→2022:237110)
- NAICS 237130 - Power and Communication Line and Related Structures Construction (via SIC1987:1629→NAICS1997:23493→2002:237130→2007:237130→2012:237130→2017:237130→2022:237130)
- NAICS 237120 - Oil and Gas Pipeline and Related Structures Construction (via SIC1987:1629→NAICS1997:23493→2002:237120→2007:237120→2012:237120→2017:237120→2022:237120)
Classification Details
| SIC Code | 1629 |
|---|---|
| Industry Title | Heavy Construction NEC |
| Division | Division C: Construction |
| Major Group | Major Group 16: Heavy Construction - Other Than Building Construction Contractors |
| Source / Verified | US Census 1987 SIC Concordance / 2026-06-28 |
Related Resources & Compliance Guides
Further regulatory reference links for legacy SIC code 1629:
- SIC Codes Complete Compliance Guide — Detailed history and active legal applications of the SIC classification framework.
- Why Legacy SIC Codes Persist Guide — How credit systems and the SEC still rely on SIC metadata.
- SIC ↔ NAICS Crosswalk Tool — Trace industrial code conversions dynamically.
- SIC Major Group 16 Hub — View other legacy industries in this business division.
Related Industries in Major Group 16
Frequently Asked Questions (FAQ)
What industry does SIC code 1629 represent?
SIC 1629 is 'Heavy Construction NEC', a 4-digit Standard Industrial Classification (SIC) code under Major Group 16: Heavy Construction - Other Than Building Construction Contractors (Division C: Construction); it maps to modern 2022 NAICS code(s): 236210 (Industrial Building Construction), 238990 (All Other Specialty Trade Contractors).
What is the modern 2022 NAICS mapping for SIC 1629?
SIC code 1629 maps to modern NAICS codes: 236210 - Industrial Building Construction, 238990 - All Other Specialty Trade Contractors, 237990 - Other Heavy and Civil Engineering Construction, 238910 - Site Preparation Contractors, 237110 - Water and Sewer Line and Related Structures Construction, 237130 - Power and Communication Line and Related Structures Construction, 237120 - Oil and Gas Pipeline and Related Structures Construction.