Infrastructure Construction Services in Sikkim and Siliguri

Denzong Construction & Infra Projects Pvt. Ltd. is a trusted company for road construction in Sikkim, delivering reliable infrastructure solutions across Sikkim and Siliguri. With strong technical expertise, skilled manpower, and experience in executing complex projects, we support public and private sector infrastructure development with a focus on quality, safety, and timely completion.

Our infrastructure services are designed to meet regional requirements, challenging terrain conditions, and regulatory standards, ensuring long-lasting and sustainable construction outcomes.

Road Construction Services in Sikkim

We specialize in road construction in Sikkim, undertaking projects that include urban roads, rural connectivity roads, and access roads for residential, commercial, and government developments.

Our road construction services cover:

  • Road formation and alignment works

  • Sub-base and base course construction

  • Bituminous and concrete road works

  • Drainage and slope protection works

  • Pavement strengthening and repair

With a structured execution approach, we ensure durable road infrastructure that meets engineering and safety standards.

Bridge Construction & Structural Works

Denzong Construction undertakes bridge construction in Sikkim for small and medium span structures as part of infrastructure and connectivity projects. Our team follows approved structural designs, quality material usage, and strict safety protocols throughout the construction process.

Our bridge and structural services include:

  • RCC and structural bridge works

  • Culverts and minor bridge construction

  • Retaining walls and support structures

  • Load-bearing and safety compliance works

We ensure precision execution and long-term structural stability.

Earthwork & Excavation Services

As part of our infrastructure capabilities, we provide comprehensive earthwork and excavation services in Sikkim. Our experience in varied terrain allows us to manage excavation, site preparation, and land development activities efficiently.

Our earthwork services include:

  • Site excavation and leveling

  • Embankment and cutting works

  • Slope stabilization

  • Backfilling and compaction

These services support road, bridge, and building infrastructure projects.

Infrastructure Projects in Siliguri

In addition to Sikkim, we actively deliver infrastructure construction services in Siliguri, supporting road works, structural development, and civil infrastructure projects.

Our familiarity with local site conditions, manpower coordination, and material logistics enables smooth project execution across Siliguri and nearby regions.

Quality, Safety & Project Execution

Quality and safety are core principles in all our infrastructure construction projects. We follow structured quality control procedures, site supervision protocols, and safety guidelines to ensure reliable project outcomes.

Our execution approach includes:

  • Use of approved construction materials

  • Skilled technical supervision

  • Compliance with engineering standards

  • Timely project delivery

This disciplined process helps us maintain consistency and client confidence.

Why Choose Us for Infrastructure Construction in Sikkim

Clients choose Denzong Construction for infrastructure projects because of our:

  • Proven experience in road and infrastructure works

  • Strong regional presence in Sikkim and Siliguri

  • Skilled technical and execution team

  • Commitment to quality and safety

  • Transparent and professional project management

Get in Touch for Infrastructure Projects

If you are looking for a reliable partner for road construction, bridge works, or infrastructure development in Sikkim or Siliguri, Denzong Construction & Infra Projects Pvt. Ltd. is ready to assist. Contact us to discuss your project requirements and execution approach.

Our Project Portfolio

Below is an overview of the major Denzong Construction projects completed or currently underway across Sikkim, Gangtok, Siliguri, and surrounding regions.
  • Construction of Cradle Arrangement – CWC, Sikkim (1991) Developed cradle arrangements at Teesta Hydel Project Stage IV, Dzongu, ensuring robust infrastructure for key hydrological investigations by the Central Water Commission.
  • Temporary Store Shed – CWC, Mamring (1994) Executed construction of a durable storage facility under the Teesta Hydel Project Stage IV, supporting material and equipment management for ongoing works.
  • Class II Quarters – Building & Housing Dept., Gangtok (2004) Built modern residential quarters for the Judiciary at Sichey, providing functional and comfortable living infrastructure for government staff.
  • Construction Work near Karma Hotel, Gangtok (2005) Delivered essential infrastructure improvement works near Karma Hotel and Sulabh International area, enhancing civic facilities in the locality.
  • Road from Daramdin to Nalbo Goan (2007) Constructed a vital PMGSY road link improving rural connectivity and accessibility between Daramdin and Nalbo villages in Sikkim.
  • Upgradation of Syari Road to Middle Syari School (2009) Upgraded and extended road infrastructure enhancing access to Middle Syari School, significantly improving local transportation in East Sikkim.
  • S.T. Girls Hostel at Govt. College Tadong (2011) Built a dedicated hostel for S.T. students at GDC Tadong, fostering inclusive education and providing safe accommodation for girls.
  • Repair of Building No. 14 – ITBP, Lingdum (2012) Undertook repair and restoration work for ITBP infrastructure, ensuring safety, functionality, and long-term structural stability.
  • New Road via Satam Samrok, Yangyang (2012) Constructed a diversion road under the Roads & Bridges Department to improve accessibility and regional transport efficiency in South Sikkim.
  • MES Civil Works for 43 MD ACCN, Gangtok (2012) Delivered Road, footpath, and protection works for the Military Engineering Services, strengthening defence infrastructure in the region.
  • RCC Overhead Tank & Retaining Walls – MES, Sevoke (2012) Constructed water storage and retaining systems for MES Siliguri, ensuring efficient utility management and structural stability.
  • Judicial Academy, Sokeythang (2013) Developed a state-of-the-art judicial training facility, contributing to the professional development of the legal community in Sikkim.
  • Beautification of Ranipool Bazar & Parking Yard (2014) Executed urban beautification, parking, and protective works, transforming Ranipool into a cleaner, more organized civic hub.
  • Multispeciality Hospital Project – Sichey (2016–2017) Completed multiple civil infrastructure works including drainage, cable trenches, and structural elements for a 1000-bedded hospital in Sichey, Gangtok.
  • OFC Trenching Work – SMU Campus, Tadong (2017) Carried out optical fiber and structural overhead work, enhancing digital infrastructure within the Sikkim Manipal University campus.
  • Retaining & Breast Wall Works – Sichey (2018) Constructed CRSM retaining walls, drains, and jhora linings for the 1000-bedded hospital project, ensuring slope stability and effective drainage.
  • Retaining & Drain Works – Folk History Center, Nupgaon (2018) Executed civil and drainage structures for the Folk History Center Project, improving site durability and landscape aesthetics.
  • PMGSY Road with Bridge – Jalpesh, Jalpaiguri (2019) Constructed 4.5 km of rural road and a minor bridge under WBSRDA, boosting local connectivity and transportation infrastructure in West Bengal.
  • COVID Lab – STNM Hospital, Gangtok (2020) Delivered critical healthcare infrastructure by constructing a dedicated COVID testing laboratory at STNM Hospital during the pandemic.
  • National School of Drama Auditorium – Gangtok (2020) Constructed a modern auditorium for the National School of Drama, creating a cultural landmark for performing arts in Sikkim.
  • Type I & II Quarters – SIB Colony, Gangtok (2020) Built high-quality residential quarters under CPWD for SIB personnel, ensuring safe and efficient accommodation facilities.
  • Integrated Processing Facility – IFFCO, Rangpo (2021) Constructed a cutting-edge organic fertilizer processing unit for IFFCO Sikkim in EPC mode, promoting sustainable agricultural development.
  • White Topping Concrete Road – Changu (2021) Executed high-altitude white-topping concrete road works for UltraTech Cement, ensuring durable and weather-resistant connectivity near Changu.
  • NH717 Bagrakote Kafer Road, Kalimpong District, West Bengal (2021) Executed complete road development including earthwork, subgrade preparation, retaining and breast walls, BM and carpeting. The project improved regional connectivity and ensured long-lasting durability under challenging terrain.
  • Bridge & Roof Co. Ltd., Rangapani, Siliguri, West Bengal (2025) Undertook comprehensive civil works involving RCC pits, foundations, fire water tank construction, and miscellaneous structural elements ensuring robust industrial infrastructure.
  • WBSRDA PMGSY Road, Maynaguri, West Bengal (2019) Constructed a 4.5 km rural road from Falture More to Jalpesh Mela Math Nursery under PMGSY, providing improved access and safer transport links for local communities.
  • 66/11 KV Power Substation, Temi, South Sikkim (2024) Delivered complete civil works including control room, staff apartments, pump house, boundary and retaining walls, and internal roads—enhancing the region’s power infrastructure.
  • 132/11 KV Power Substation, Dikchu, East Sikkim (2025) Developed a modern power substation facility with all essential civil components such as control building, RCC foundations, retaining walls, and internal utilities ensuring operational efficiency.
  • Manipal MU Block, East Sikkim (2025) Constructed a multi-utility block at SMU Campus, providing enhanced academic and administrative infrastructure that supports the university’s growing educational needs.
  • CEEPL East Sikkim (2025) Completed major retaining and breast wall works using RCC, plum, and CRSM techniques to stabilize slopes and protect key infrastructure in hilly terrain.
  • CEEPL Retaining Wall, Gangtok, East Sikkim (2018) Constructed robust retaining and breast walls ensuring slope protection and long-term stability for the surrounding infrastructure in the Gangtok region.
  • CEEPL Retaining Wall, Gangtok, East Sikkim (2018) Executed large-scale retaining wall and drainage protection works using RCC and plum masonry to reinforce embankments and control erosion.
  • CEEPL SCHY HOSP East Sikkim (2019) Developed retaining and breast walls at a key healthcare facility site, providing vital slope stability and structural safety for hospital infrastructure.
  • IFFCO PEB Factory, Rangpo, East Sikkim (2021) Constructed a pre-engineered building with complete civil works including RCC foundation, pump house, security building, boundary wall, and internal roads—delivering a modern, efficient industrial facility.
  • A premium housing project Kamal Kunj located at the heart of Siliguri city Iskcon mandir road, West Bengal
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