Corridor Mapper

Smart Block Placement & Data Exchange for Road Projects

Preparing road drawings from survey and design data is never straightforward.

In road and highway projects, engineers frequently need to place multiple assets such as milestones, trees, light poles, and markers along a road corridor. These assets must be positioned accurately based on chainage and offset values, usually provided through Excel sheets generated from surveys or design data.

At the same time, there are situations where drawings already contain these blocks, and engineers need to extract chainage and offset information back into Excel for reporting or validation.

Managing this two-way data flow manually is time-consuming and error-prone.

Corridor Mapper (Road Marker) is designed to solve exactly this problem.

What is Corridor Mapper?

Corridor Mapper is an AutoCAD-based solution that enables you to:

  • Insert blocks accurately along a road alignment using Excel data

  • Automatically calculate chainage, offset, and orientation

  • Support normal blocks, attribute blocks, and dynamic blocks

  • Export block information from drawings back into CSV format

It bridges the gap between Excel-based survey/design data and CAD-based road drawings seamlessly.

Typical Use Cases in Road Projects

  • Marking milestones, trees, light poles, signage, and utilities

  • Placing assets on left or right side of the corridor

  • Updating drawings when alignment or chainage data changes

  • Generating Excel reports from existing corridor drawings

Block Types Supported

Corridor Mapper works with multiple block types to suit different project needs:

Normal Blocks

Simple blocks for standard markers.

Attribute Blocks

Used when additional information is required.

  • Chainage

  • Elevation

  • Location

Dynamic Blocks

Dynamic blocks add visual and practical value.
In the sample, the marker length of the block can be varied dynamically using a parameter.

Pre-Check Before Import – CHKb Command

All required blocks must already exist in the drawing before importing data.

Importing Block Data from CSV

Once all required blocks are present:

Automated Intelligence During Insertion

  • Inserts blocks at correct chainage

  • Calculates and applies rotation

  • Adjusts dynamic block marker length

  • Populates attribute values from CSV

Export Data from Drawing – EXBT Command

This feature is extremely useful for as-built documentation, validation, and reporting.

Why Corridor Mapper?

  • ✔ Eliminates manual block placement

  • ✔ Ensures accuracy in chainage and offset

  • ✔ Works seamlessly with Excel and AutoCAD

  • ✔ Supports advanced block types

  • ✔ Saves hours of repetitive drafting work

Simplify corridor-based drafting and reporting.

👉 Watch the demo video to see Corridor Mapper in action.
👉 Contact us to schedule a live demo for your road project.