McMaster takes us on a journey through the history of bridge and tunnel construction in America. From the earliest wooden bridges to the latest high-tech tunnels, he explores the engineering marvels that have made modern transportation possible. Along the way, he introduces us to the visionaries and innovators who changed the course of history with their groundbreaking work. Whether you are a transportation buff, an armchair historian, or simply someone who appreciates human ingenuity, you will find this book both informative and entertaining. This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work is in the "public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work. Scholars believe, and we concur, that this work is important enough to be preserved, reproduced, and made generally available to the public. We appreciate your support of the preservation process, and thank you for being an important part of keeping this knowledge alive and relevant.