TRB’s National Cooperative Highway Research Program (NCHRP) Web-Only Document 116 includes the corrosion study and implementation plan for NCHRP Report 597: Development of a Recommended Practice for Use of Controlled Low-Strength Material in Highway Construction. NCHRP Report 597 explores the use of controlled low-strength material (CLSM) in highway construction applications, in particular, as backfill, utility bedding, and void fill and in bridge approaches. The report also examines a recommended practice for the use of CLSM that was developed through a series of full-scale field experiments.