Manapparai: No 23, Perumal Kovil Vanika valagam | Coimbatore: 1 Cross extn, 100 ft road, Ghandipuram 641012
+91 73977 33223|info@ndse.in
Infrastructure Surveys

Road Alignment Survey

Precise horizontal and vertical alignment surveys for the design, widening, and construction of new and existing road networks.

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Road Alignment Survey

Overview

What is a Road Alignment Survey?

A road alignment survey establishes the precise horizontal path (curves, tangents) and vertical profile (gradients, crests, sags) of a road. It involves mapping the existing terrain along a proposed corridor or an existing road to facilitate optimal design for safety, drainage, and earthwork economics.

Why is it Required?

Proper road alignment is critical for vehicle safety, adequate drainage, and minimizing construction costs. An accurate survey provides the foundation for designing smooth curves, ensuring safe sight distances, calculating cut and fill volumes, and avoiding costly obstacles or unstable ground.

Who Needs it?

State highways departments, municipal corporations, rural road development agencies, private infrastructure developers, and contractors involved in road widening, bypass construction, or new road development.

Key Benefits

Safety and Compliance — Enables design per IRC (Indian Roads Congress) standards
Cost Optimization — Minimizes cut and fill through optimal profile design
Accurate Execution — Provides precise setting out data for contractors
Comprehensive Data — Detailed mapping of existing utilities and structures

Our Survey Process

1
Control Establishment

Setting up primary and secondary DGPS control points along the corridor.

2
Topographic Detailing

Capturing all existing features, utilities, and boundaries within the right-of-way (ROW).

3
L-Section & Cross-Section

Taking precise level readings along the center line and at regular cross-intervals.

4
Data Processing

Generating digital terrain models (DTM) and alignment drawings using civil design software.

5
Setting Out

Physically marking the finalized center line, curves, and toe/catch points on the ground.

Frequently Asked Questions

What standards do you follow for road surveys?

We strictly adhere to Indian Roads Congress (IRC) specifications and guidelines from MoRTH (Ministry of Road Transport and Highways).

Can you survey existing roads for widening projects?

Yes, we conduct detailed surveys of existing roads including pavement edge, shoulders, drains, and adjacent properties for widening and upgrading projects.

Do you use drones for road surveys?

We often use Drone Photogrammetry combined with DGPS ground control for rapid corridor mapping, while using Total Stations for critical detail areas.

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