AASHTO LRFDUS-5-I1 contains the 2010 interim revisions to the AASHTO LRFD Bridge Design Specifications, Fifth Edition (2010). The interim is issued as a packet of revised pages that are kept with the base specifications for fast reference rather than replacing the corresponding pages. Underlined text marks revisions approved in 2010 by the AASHTO Highways Subcommittee on Bridges and Structures, and strikethrough text marks approved deletions. A list of affected articles is included so users can locate the changed provisions. The revisions span the sections covering introduction, general design and location features, loads and load factors, structural analysis and evaluation, concrete structures, steel structures, wood structures, buried structures and tunnel liners, railings, and joints and bearings. Bridge designers and reviewers maintaining the current LRFD specifications need the interim to have all current specification information.