NOVA Online: Super Bridge - Information about the four major types of bridges. Offers a knowledge test by matching each bridge to the correct location. How Stuff Works: Beam, Arch and Suspension Bridges - Clear, concise explanations for various types of bridges with many illustrations and related links. Mark Ketchum's Bridge Engineering Page - Photos and descriptions of some bridge structures and some discussion of bridge engineering issues. Load and Resistance Factor Design - Technical support, information and news on the AASHTO LRFD bridge design specifications. The BridgeSite - Resources for bridge engineers including engineering tools, discussion groups, and an industry events calendar. Bridge and Structures Office - Washington State Department of Transport - Provides a range of structural services required to provide safe, economical and reliable structures for the state's transportation system. Features projects, maps, and data. Arizona Department of Transportation Bridge Group - Responsible for bridge design, construction assistance, and management. Includes guidelines, preservation program, structural detail cad drawings, and a gallery of bridges. Center for Innovative Bridge Engineering - Serves as a resource for highway and railroad bridge owners in the United States and worldwide. Features researchers, projects, education, and news and events. At the University of Delaware. Bridge Administration Division: U.S.Coast Guard - Responsible for approval of the location and plans of bridges and causeways constructed across navigable waters of the United States. Provides bridge clearance and permit application guides. Bridge Research: Leading the Way to the Future - Article that discusses the role and value of research in highway bridges. Engineering Encounters - Bridge Design Contest - Annual competition sponsored by the American Society of Civil Engineers. Includes free software download.