There are over 2,000 bridges and 20 tunnels throughout New York City that help connect its five boroughs to each other. This book explores several of the best known of these important structures, with authentic text and vivid color photographs. Supports New York City's Grade 2 social studies standard for Unit 1: New York City's Geography 3.1b, 3.1c, 3.1e, 3.2a.