These links refer to research funded by the UK Bridges Board or to publications of value to bridge practitioners:
CIRIA - Construction Industry Research and Information Association - home page
http://www.ciria.org/service/Home/AM/ContentManagerNet/HomePages/
The next 3 items refer to CIRIA publications arising from research funded by UK Bridges Board:
CIRIA Report C676 - "Drystone retaining walls and their modifications: condition appraisal and remedial treatment"
http://www.ciria.org/service/AM/ContentManagerNet/ContentDisplay.aspx?ContentID=11607
CIRIA Report C664 - "Iron and steel bridges: Condition appraisal and remedial treatment"
http://www.ciria.org/service/bookshop_entrance/Core/Orders/product.aspx?catid=8&prodid=147
CIRIA Report C656 - "Masonry arch bridges: Condition appraisal and remedial treatment"
http://www.ciria.org/service/bookshop_entrance/Core/Orders/product.aspx?catid=8&prodid=142
TSO [The Stationery Office] online bookshop - Transport publications
http://www.tsoshop.co.uk/bookstore.asp?AF=A10&fo=1159997
The site includes:
Highways Agency - Inspection Manual for Highway Structures
Highways Agency - Design Manual for Roads and Bridges