Denbigh Hall Bridge carrying the London and Birmingham Railway at Bletchley, Buckinghamshire: soldiers on horseback ride… https://www.rawpixel.com/image/13994417/image-horse-person-artFree Image from public domain licenseCivil engineering: the Menai box girder bridge. Engraving by S. Bradshaw after G. Dodgson. https://www.rawpixel.com/image/13989901/image-cloud-person-artFree Image from public domain license