Key Facts
421002 at a Glance
Code 421002
Official title Construction and maintenance of tunnels, subways, bridges and overpasses
Version NIC 2025
Source authority MoSPI
Section F - Construction
Division 42 - Civil engineering
Cn
NIC 2025 MoSPI source NIC 421002 - Construction and maintenance of tunnels, subways, bridges and overpasses
NIC 421002 classifies construction and maintenance of tunnels, subways, bridges and overpasses as a final six-digit construction activity under Section F and Division 42. Use it when this activity is the main source...
Source Verification for 421002
10 / 10
4 of 4 factors passing
- Verified in official source - Found in NIC_2025.xlsx official MoSPI release dataset.
- International crosswalk available - No official ISIC/NACE/CPC/ISCO correspondence table is bundled in this build input set.
- Migration from previous edition - Legacy migration candidates present from NIC 2008: 3.
- Complete hierarchy chain - All parent levels exist: Section > Division > Group > Class > Sub-class (5 levels).
- Official size/threshold documented - No official code-level size or threshold dataset is included in this source bundle.
- Trade or export crosswalk match - No official NIC-to-HS/export correspondence table is bundled in this source bundle.
- Legacy national crosswalk - Legacy link exists via NIC 2008 converter layer (3 linked legacy codes).
NIC 2008 -> NIC 2025 Mapping for 421002
NIC 2008 links are discovery matches from the local converter layer. Verify final migration decisions against official source documents.
NIC 2008 42101 medium
Construction and maintenance of motorways, streets, roads, other vehicular and pedestrian ways, highways, bridges, tunnels and subways
Practical Summary
What Construction and maintenance of tunnels Means Under NIC 2025
NIC 421002 is the final six-digit endpoint for Construction and maintenance of tunnels, subways, bridges and overpasses. It should be selected only when the enterprise's primary construction activity matches this title more closely than 421001 Construction and maintenance of motorways, streets, roads, other vehicular and pedestrian ways including surface work, 421003 Construction and maintenance of airfield runways, 421004 Construction and maintenance of railway tracks/ Metro tracks.
How To Choose
When to Choose 421002 Over Nearby Codes
Choose 421002 only when operations, invoices and revenue narrative align with Construction and maintenance of tunnels, subways, bridges and overpasses. If the activity also includes 421001 Construction and maintenance of motorways, streets, roads, other vehicular and pedestrian ways including surface work, 421003 Construction and maintenance of airfield runways, 421004 Construction and maintenance of railway tracks/ Metro tracks, compare those pages before filing.
In this section
421001
Construction and maintenance of motorways, streets, roads, other vehicular and pedestrian ways including surface work
421002
421003 Construction and maintenance of tunnels, subways, bridges and overpasses
Construction and maintenance of airfield runways
421004 Construction and maintenance of railway tracks/ Metro tracks
421099 Other construction of roads and railways n.e.c.
Common Questions About NIC 421002
Does NIC 421002 cover a full construction project or a specialized trade?
Use building or civil engineering codes for whole-project construction. Use specialized construction codes when the firm mainly performs electrical, plumbing, HVAC, demolition, roofing, finishing or similar trade work.
Can a contractor use NIC 421002 if work is subcontracted?
Use the code that reflects the contractor's own contracted responsibility. A project developer, civil contractor and specialist installer can fall under different NIC codes even on the same site.
How do I verify that NIC 421002 is correct before filing?
Check the parent hierarchy, compare 421001 Construction and maintenance of motorways, streets, roads, other vehicular and pedestrian ways including surface work, 421003 Construction and maintenance of airfield runways, 421004 Construction and maintenance of railway tracks/ Metro tracks, and confirm that the official title matches the main revenue activity. For regulated or filing-critical decisions, verify the source row in the MoSPI dataset.
What happens if I use the wrong NIC code in Udyam or MCA registration?
A wrong code can cause mismatched business descriptions, follow-up questions or later compliance cleanup. It is better to compare nearby codes before filing than to correct a weak classification later.
Is there a legacy NIC 2008 equivalent for NIC 421002?
Use the legacy converter only as a migration aid. Old NIC 2008 matches can suggest where to look, but NIC 2025 should remain the primary reference for new code selection.
NIC 2026 guidance
Before you select NIC 421002
NIC 421002 should be selected only when the official title matches the main revenue-generating activity. If the business also trades, transports, processes, installs or supports the same product or service, compare nearby NIC pages before filing. This reduces the risk of choosing a code that describes the product being handled rather than the activity your enterprise actually performs.
Data Source and Verification Date
Source layer
Official NIC 2025 Excel and PDF from MoSPI.
Last verified
2026-04-21 from the generated NIC 2025 source layer used in this build.
Disclaimer
This is an independent reference tool. Verify filing-critical decisions in official sources.