Free pergola plans by Simpson Strong-Tie will help beautify your backyard while providing your family and guests with shade to relax in. These pergola designs were developed by Simpson Strong-Tie engineers, so you can be confident that not only will they look great but they’ll be safe, strong structures. We’ve set out to create a diverse selection of architectural styles to make it easier for you to find the structure that best enhances your outdoor space. If you’re looking for something other than a pergola, we’ve also developed free designs for an arbor, a party pavilion and a patio cover.