The claim is that it will reduce corrosion by 3x. If corrosion of rebar is the primary bottleneck to bridge longevity, a 3x longer life seems like a reasonable

The claim is that it will reduce corrosion by 3x. If corrosion of rebar is the primary bottleneck to bridge longevity, a 3x longer life seems like a reasonable claim. Of course in practice if this rebar is used in a bridge you might start to discover other things become the bottleneck, but that remains to be seen.