Welcome to bridgeautomation.net — a free suite of online structural engineering tools for bridge design and analysis professionals. No installation required. All tools run directly in your browser, on any device with an internet connection.
Whether you are a student learning structural engineering fundamentals or a licensed professional performing bridge design calculations, our tools are designed to be fast, reliable, and easy to use. All results are based on established engineering principles and widely used design standards.
Access the full software suite at bridgeautomation.net/OurSoftware. Below is a summary of the available apps:
Column Analysis — Moment-curvature (M-φ) analysis with confined and unconfined concrete, and P-M interaction diagrams, for round reinforced concrete columns.
Section Properties — Area, centroid, moments of inertia and distances to the extreme fibers for circles, rectangles, I-shapes, box girders and arbitrary shapes.
Reinforcement — Bar dimensions, ACI standard hooks, stirrups and ties (including seismic), and AASHTO LRFD tension development length.
Prestressing — Grade 270 strand and tendon properties.
Beam Design — LRFD moment capacity of reinforced concrete rectangular beams and prestressed T-beams.
Roadway Geometry — Horizontal and vertical curve calculations. Android apps are also available on Google Play: Horiz Curve and Vert Curve 2.
Math Solver — Engineering calculations and equations with units. Math Solver Pro, with many new features, is coming soon.
Traditional structural engineering software requires installation, licensing, and often a specific operating system. Online apps eliminate these barriers entirely. With bridgeautomation.net, there is nothing to download or configure — simply open a browser and start calculating. This makes the tools equally accessible on Windows, Mac, Linux, or any modern mobile device.
Cloud delivery also means updates and corrections are applied instantly. When a calculation method is refined or a new feature is added, every user benefits immediately without needing to update or reinstall anything.
Bridge Automation tools are designed for a broad audience in structural and civil engineering:
Visit our main site at bridgeautomation.com for engineering reference materials, design resources organized by topic (concrete, steel, seismic, geotechnical, and more), a community forum, and a regularly updated engineering blog. The forum is an excellent place to ask questions, share results, and connect with other structural engineering professionals.
Bridge Automation also offers Android apps available on Google Play for on-the-go engineering calculations in the field:
To begin using the software, navigate to bridgeautomation.net/OurSoftware. No account is required; the first time, you complete a quick captcha and accept the Use Agreement. Then select any app from the menu, enter your input values, and the tool will return results immediately. For assistance with a specific tool, post a question in the community forum or consult the FAQ page.
The Online Apps are free to use. No registration, no subscription, no payment information. Our goal is to make quality engineering tools accessible to everyone, from students learning the fundamentals to seasoned professionals performing complex analyses.
Math Solver Pro, with many new features, is coming soon. Follow the blog and forum for updates.