Highway, railway, transmission line, canal and pipeline surveys — linear infrastructure demands corridor-scale methods and discipline.
A corridor survey maps a continuous strip of ground along a linear route — a highway, railway, canal, pipeline or transmission line — on one consistent datum from end to end. Linear projects concentrate every surveying challenge: long distances, continuous accuracy, changing terrain and many stakeholders. BTPL executes corridor surveys end-to-end — control along the route, terrain capture by the method the corridor demands (UAV, LiDAR, ground survey or hybrid), and design-ready alignment deliverables.
BTPL surveys corridors across India from its office in Mundka, Delhi. In Delhi NCR they include the 30 km rail alignment from Sarai Kale Khan to the Sonipat border for NCRTC, through Mega Engineers, Noida.
From DPR-stage route data to construction setting-out, deliverables follow chainage discipline so every section, profile and quantity lines up with the design alignment.
BTPL executes corridor surveys for linear infrastructure, carrying survey control consistently along the full length of a route and delivering chainage-referenced plans, profiles and sections for:
Control pairs along the corridor by static GNSS, intervisible for conventional work, connected to benchmarks.
UAV/LiDAR corridor flights and/or ground survey strips per terrain and vegetation; crossings and structures detailed.
Data referenced to the design alignment; chainage-wise L-section and cross sections generated.
Existing roads, structures, utilities, crossings and ROW features mapped and coded.
Strip plans, profiles, sections, KML route files and quantity support per deliverable schedule.
Corridor control is verified by closures between adjacent control pairs, and terrain from aerial methods is checked against ground sections at intervals — so the profile a designer uses is proven, chainage by chainage.
Railways
Matrix Geo Solutions Ltd.
Water Resources
Balaji Surveyors Pvt LtdCorridor work is organised block-wise with consistent control, so length scales operationally — from a few kilometres to long inter-city routes.
As specified by the design requirement — commonly 25/50 m intervals plus all critical points (crossings, structures, terrain breaks).
Yes, with appropriate planning: aerial capture minimises exposure, and ground work follows the operating authority's safety protocols.
Tell us the location, the approximate area or corridor length, and the deliverables you need — we will respond with the appropriate methodology and a clear proposal.