Please follow this link (for civil and structural engineering subjects) and choose the appropriate journal for your manuscript. There are a lot of free - publishing journal in this list. Go the website of selected journal and read if it free or not.
In the field of Geotechnical Engineering, International Journal of Geotechnical Engineering (index in Taylor & Francis) might be useful (free, review and accept in short time):
Most of the journals of ELSEVIER and ASCE are frrely published your paper, if there is no colour page. If you have some colour pages, then you have to pay some money for those colour pages due to print.
please state the particular elsevier journal in civil/structural engineering with no publication charge. Most of the elsevier ASCE journals I know are very expensive ranging from 200 dollars up. Pls which one is free. Be specific