Condition as new. \"As with the previous two symposia, the 32 papers from the June/July, 1999, Seattle symposium present advances in the nondestructive testing of pavements using conventional falling weight deflectometer techniques and other promising techniques such as ground penetrating radar, rolling weight deflectometer testing, and seismic techniques. In addition, topics presented include dynamic analysis of deflection data, the use of neural network analysis, and the use of dynamic cone penetrometer testing.\"