This course was developed in support of AASHTO’s adoption of the specification for Load and Resistance Factor Design (LRFD) for highway bridges. Topics covered in the course include:

• Introduction/background of the new LRFD Bridge Design Code
• Loads, load factors, load combinations, and methods of analysis
• Concrete structures
• Steel structures
• Abutments, piers, and walls

The objectives of this course are to provide bridge design engineers and design administrators with the background on how and why AASHTO decided to develop an LRFD Specification, to provide some basic insight into the probabilistic approach to establishing safety of the bridge system, and to identify the primary differences in ASD, LFD, and LRFD. The process of establishing live-load models, load and resistance factors, and other major departures from the Standard Specifications are explained. The application to steel girder, concrete girder, concrete deck, P/C culverts, and retaining wall design is explained through detail examples.

Modjeski and Masters, Inc., provided the following engineering services for the following two phases of work:

• Developed a two volume set of course notebooks totaling about 900 pages
• Developed all required visual aids
• Taught 30 on-sight courses throughout the United States
• Presented two nationally televised courses received by approximately 1200 engineers