Table of Contents Acknowledgments ix Introduction 1 PART I: HISTORY AND DEVELOPMENT OF NORTHERN NEW ENGLAND BRIDGES 1. Northern New England's Early Bridges 5 2. The Advent of Iron and Steel Truss Bridge Designs 10 3. The Anatomy of a Bridge 19 4. Notable Bridge Types of Northern New England 31 5. The Life of a Bridge 47 6. Civil Engineering in Northern New England 55 7. Railroad Bridges 64 8.

The Death of a Bridge 72 9. Preservation Efforts 78 PART II: NOTABLE BRIDGE HISTORIES 10. Vermont Bridges 89 11. New Hampshire Bridges 110 12. Maine Bridges 140 13. Interstate Bridges 167 Appendix 1: Bridge Companies Represented in the Region 187 Appendix 2: Vermont Historic Metal Highway Bridges 188 Appendix 3: New Hampshire Historic Metal Highway Bridges 191 Appendix 4: Maine Historic Metal Bridges 194 Bibliography 197 Index 203.