SIC 1629 to NAICS Code Crosswalk
The legacy 1987 SIC code 1629 (Heavy Construction NEC) maps transitively to modern U.S. Census 2022 NAICS code(s): 236210, 237110, 237120, 237130, 237990, 238910, 238990.
Concordance Concordance Mapping Asset
| Source Code | Source Industry | Target Code | Target Industry | Relation | Concordance Path |
|---|---|---|---|---|---|
| SIC 1629 | Heavy Construction NEC | NAICS 236210 | Industrial Building Construction | One-to-Many | SIC1987:1629 → NAICS1997:23499 → 2002:236210 → 2007:236210 → 2012:236210 → 2017:236210 → 2022:236210 |
| SIC 1629 | Heavy Construction NEC | NAICS 237110 | Water and Sewer Line and Related Structures Construction | One-to-Many | SIC1987:1629 → NAICS1997:23499 → 2002:237110 → 2007:237110 → 2012:237110 → 2017:237110 → 2022:237110 |
| SIC 1629 | Heavy Construction NEC | NAICS 237120 | Oil and Gas Pipeline and Related Structures Construction | One-to-Many | SIC1987:1629 → NAICS1997:23493 → 2002:237120 → 2007:237120 → 2012:237120 → 2017:237120 → 2022:237120 |
| SIC 1629 | Heavy Construction NEC | NAICS 237130 | Power and Communication Line and Related Structures Construction | One-to-Many | SIC1987:1629 → NAICS1997:23493 → 2002:237130 → 2007:237130 → 2012:237130 → 2017:237130 → 2022:237130 |
| SIC 1629 | Heavy Construction NEC | NAICS 237990 | Other Heavy and Civil Engineering Construction | One-to-Many | SIC1987:1629 → NAICS1997:23499 → 2002:237990 → 2007:237990 → 2012:237990 → 2017:237990 → 2022:237990 |
| SIC 1629 | Heavy Construction NEC | NAICS 238910 | Site Preparation Contractors | One-to-Many | SIC1987:1629 → NAICS1997:23499 → 2002:238910 → 2007:238910 → 2012:238910 → 2017:238910 → 2022:238910 |
| SIC 1629 | Heavy Construction NEC | NAICS 238990 | All Other Specialty Trade Contractors | One-to-Many | SIC1987:1629 → NAICS1997:23499 → 2002:238990 → 2007:238990 → 2012:238990 → 2017:238990 → 2022:238990 |
Why Concordances Don't Line Up 1:1
The Standard Industrial Classification (SIC) system was established in 1937 and last updated in 1987, organizing businesses by end products. The North American Industry Classification System (NAICS) replaced it in 1997, classifying establishments by production processes. Because of this structural shift, many-to-many relationships are common, requiring chained concordance steps to bridge the historical gap.
Reverse Crosswalk: Going the other way? See the mapping at NAICS 236210 to SIC, NAICS 237110 to SIC, NAICS 237120 to SIC, NAICS 237130 to SIC, NAICS 237990 to SIC, NAICS 238910 to SIC, NAICS 238990 to SIC.
Related Pages & Tools
- SIC Code 1629 Profile — Legacy OSHA definition and associated industrial metadata.
- SIC Major Group 16 Hub — Legacy category group directory.
- Interactive Crosswalk Engine — Convert any SIC or NAICS code dynamically.
Primary Ingestion Source
Data sourced from the U.S. Census Bureau Concordances (1997, 2002, 2007, 2012, 2017, and 2022 editions). Last verified on 2026-06-30.