Elevated levels of chloride were recently discovered in a commercially available pre-bagged grout product made for post-tensioned (PT) tendons. These chloride values exceed the current limits set by all of the domestic and international regulatory committees. However, there is limited information reported in the literature pertaining to actual chloride threshold of seven-wire PT strands. For this reason, the Federal Highway Administration sponsored a 6-month accelerated corrosion testing program to determine chloride threshold(s) of PT strands exposed to chloride-contaminated grout. The findings of this study should be useful to bridge owners who may be responsible for similarly affected PT bridges.