Welcome to bridgeautomation.net — a free suite of web-based 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 tools:

Beam Analysis — Calculates shear force diagrams, bending moment diagrams, and support reactions for simply supported and continuous beams under a variety of loading conditions, including point loads, uniform distributed loads, and partial distributed loads. Results are displayed graphically and numerically.

Column Design — Performs axial and flexural capacity checks for reinforced concrete columns in accordance with ACI 318. Generates interaction diagrams and evaluates whether a column cross-section can sustain the applied loads. Useful for both circular and rectangular column geometries.

Section Properties — Computes geometric and structural section properties including area, centroid, moment of inertia, section modulus, and radius of gyration for standard rolled steel sections and custom user-defined cross-sections. Essential for flexural and axial stress calculations.

Reinforcement — Provides reinforced concrete design and capacity check tools for beams and slabs. Calculates required steel area, checks existing reinforcement for adequacy, and reports demand-to-capacity ratios for flexure and shear.

Prestress — Handles prestressed concrete design calculations, including prestress losses, service-level stress checks, and flexural strength verification for pretensioned and post-tensioned members.

Math Solver — A general-purpose engineering math utility for evaluating expressions, solving equations, and handling unit conversions. Useful as a quick calculation scratchpad alongside the other design tools.

Traditional structural engineering software requires installation, licensing, and often a specific operating system. Web-based tools 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:

• Students learning structural analysis can use the beam and section tools to verify textbook problems and develop intuition for how loads affect structures.
• Junior engineers can use the tools for quick checks and to confirm hand calculations during design tasks.
• Senior engineers and checkers can use the tools for independent verification of design calculations prepared by others.
• Educators can incorporate the tools into course materials or homework assignments as a free, browser-based calculation environment.

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:

• Vert Curve 2 — Vertical curve calculations for highway and roadway design, including high/low points, elevations at any station, and curve geometry.
• Horiz Curve — Horizontal curve geometry calculations for roadway layout, including radius, tangent length, arc length, and deflection angles.

To begin using the software, navigate to bridgeautomation.net/OurSoftware. No account creation is required. Select any tool 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.

All Bridge Automation software tools are provided free of charge to the structural engineering community. There are no subscription fees, no usage limits, and no premium tiers. Our goal is to make quality engineering tools accessible to everyone, from students learning the fundamentals to seasoned professionals performing complex analyses.