National Steel Bridge Alliance - NSBA
- Industry organization of businesses and agencies interested in the development, promotion and construction of cost effective steel bridges. Provides publications, software, and newsletter archive.
- http://www.steelbridges.org/

National Concrete Bridge Council
- Council of allied industry organizations to promote quality in concrete bridge construction. Features meetings and events, publications, and basic data on bridge types.
- http://www.nationalconcretebridge.org/

Bridge Engineering Association
- Organize conferences, seminars and forums on various themes of interest to the bridge engineering community. Includes membership, news and events, and conferences.
- http://www.bridgeengineer.org/

London Bridges Engineering Group - LoBEG
- London highway authorities working together to improve bridge stock through out the city. Includes calendar of events, rules and constitution, and bridge data.
- http://www.lobeg.com/

International Association for Bridge and Structural Engineering - IABSE
- Non-profit scientific society established to promote the international exchange of knowledge. Features news, events, publications, and membership.
- http://www.iabse.ethz.ch/

Concrete Bridge Development Group - (CBDG)
- Dedicated to the task of improving efficiency of the design, construction and maintenance of concrete bridges. Features research, publications, diary of events, and membership listing.
- http://www.cbdg.org.uk/

Post-Tensioning Institute - PTI
- Research, specifications, design recommendations and provision of publications and education. Features conferences, seminars and workshops, and software.
- http://www.post-tensioning.org/

Association for Bridge Construction and Design - Western New York Chapter
- Provides a forum for members to exchange and develop new ideas and techniques. Includes membership details, events, instructional courses, and photographic archive.
- http://www.abcdwny.org/

AASHTO/NSBA Steel Bridge Collaboration
- Joint venture between industry and government to produce better steel bridges for the traveling public.
- http://www.steelbridge.org/

Association for Bridge Construction and Design (Pittsburgh Chapter)
- Information and resources for bridge design, bridge technology, and historic bridges.
- http://abcdpittsburgh.org/

American Segmental Bridge Institute - ASBI
- Nonprofit organization which provides a forum in which owners, designers, constructors, and suppliers can meet to further refine current design, construction, and construction management procedures.
- http://www.asbi-assoc.org/