Structural Bridge Design is described as 'bridge analysis software supports your design processes by integrating loading, analysis, and code checking (AASHTO LFRD, EUROCODES, and more) throughout the project'. There are more than 50 alternatives to Structural Bridge Design for Windows, Linux, Online / Web-based and Mac. The best alternative is midas Civil. It's not free, so if you're looking for a free alternative, you could try SkyCiv Structural 3D or SkyCiv. Other great apps like Structural Bridge Design are midas Gen (Paid), RISA-3D (Paid), Abaqus Unified FEA (Paid) and RISA-2D (Paid).