NH-44 Theni – Dindigul
Theni – Dindigul 4-Laning & Bypass Connecting Corridor
Four-laning of the Theni – Dindigul corridor with a connecting bypass, including minor bridges, vehicular underpasses and full drainage reconstruction.
Scope of Work & Structural Compliance
Widening to MoRTH 5th Revision specification under live traffic, with staged traffic diversion and full reconstruction of cross-drainage.
Civil & Highway Alignment Engineering
- arrow_right_altDeep Earthwork & Subgrade Stabilization: Bulk cut-and-fill across high-plasticity black cotton soils, stabilised with lime-slurry injection to achieve a resilient modulus CBR of 12%.
- arrow_right_altPavement Composition: Granular sub-base, wet mix macadam, dense bituminous macadam with VG-40 bitumen, topped with a stone matrix asphalt wearing course.
- arrow_right_altElevated / Grade-Separated Works:Post-tensioned PSC girders precast off-site and transported on hydraulic multi-axle trailers, erected with laser-guided alignment.
- arrow_right_altDrainage & Hydraulics:Reinforced concrete longitudinal side drains and RCC box culverts designed for one-in-fifty-year flash storm hydrological profiles.
Underpass & Interchange Complex
Construction of major vehicular underpasses allowing uninterrupted local traffic flow without grade interruption.
Third-Party Independent Testing
Direct oversight and QA verification conducted by the Department of Civil Engineering, National Institute of Technology (NIT) Tiruchirappalli.
Roads & Highways Code Compliance
Executed to the applicable Indian Roads Congress, MoRTH or RDSO specification for this class of work, with records available for departmental audit.
Dedicated Machinery Fleet Mobilised
Vögele Super 1800-3
High-compaction tracked asphalt paver with AB 500 TV screed, capable of continuous 8.5 m paving widths with laser sensor grade control.
Hamm 311 Tandem Rollers
11-tonne heavy tandem vibratory compactors with integrated HCM asphalt compaction meters, used to guarantee 98% laboratory density.
SANY 150T Crawler Crane
Heavy-duty lattice boom crawler crane mobilised for tandem lifting and millimetre-accurate placement of 72-tonne PSC bridge girders.
Schwing Stetter M1.25
Fully automated on-site concrete batching plant with aggregate moisture sensors, chilled water dispensing and computerised micro-dosing.
Execution Milestones & Phasing Velocity
Chronological phasing of the critical path operations for this contract.
Traffic Management Plan & Diversion Setup
Approved diversion plan implemented with temporary barriers, signage and a round-the-clock traffic cell.
Formation & Subgrade — Phase I Complete
Earthwork and subgrade completed along the first phase with density testing at every chainage.
Minor Bridges & Cross-Drainage Reconstruction
Minor bridges widened and box culverts reconstructed to the new carriageway profile.
Phase II Crust & Paving
GSB, WMM and bituminous courses progressing in echelon across the second phase.
Underpass, Furniture & Handover
In ProgressVehicular underpass, road furniture and signage to complete before final handover to NHAI.
“Traffic has been maintained throughout the widening with no significant disruption reported, and quality records have been submitted on schedule for every stage completed so far.”
Er. A. Naveenkumar
Project Director, NHAI Division, Tamil Nadu
Theni – Dindigul 4-Laning Alignment
Total corridor length: 31.20 KM
Theni Bypass Start to Dindigul Connector
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