Download the Road Design Macro for Global Mapper

Road Centerline 3D Smoothing

(Version 1.4.0 2025-11-05)

Get the exact Excel macro I use to automate road grading in Global Mapper. Just import your linework, enter a few parameters like grade %, road width, and vehicle length — and the code does the rest. No scripting skills required.

    We respect your privacy. Unsubscribe at any time.