The Bridge Traffic Load Web Calculator (based on norm Astra 82001) is a free online tool that helps engineers analyze bridge safety according to Swiss standards. Developed by ENAC-IT4R and RESSLab for the Federal Roads Office (FEDRO), it’s available in English, French, Italian, and German.
The calculator is designed for standard bridge assessments, helping engineers evaluate how well critical structural elements handle traffic loads. Engineers can use it to calculate traffic load factors, view helpful graphics, and download all the reference materials they need. Built using an agile approach with input from users on GitHub, the tool provides both beta and final versions. It gives engineers a reliable way to check if bridges can safely handle today’s traffic and what’s expected in the future.