When can a taxi clearance allow me to cross multiple runways?
The general FAA rule is indeed that ATC cannot issue a clearance to cross multiple runways.

However, waivers are available to airports with parallel runways close enough to make it impractical or even hazardous for aircraft to stop in between them and wait for a second instruction. They are essentially treating such a pair as a single runway for the purposes of this rule.

I'm not aware of any list of airports with such waivers or notification to pilots. However, one could predict whether it is likely by looking at airport diagrams. Consider the example of SFO/KSFO, which has such a waiver on both pairs; even a quick glance reveals why it's needed.

Also, I suspect the main concern behind the general rule is pilots misremembering which runway(s) they were cleared to cross when there is a substantial distance between them. The case of two very close parallels, along with the unusual (and thus memorable) multiple crossing instruction, does not seem to have the same safety concern.