The Newjersey Turnpike

That's interesting. I can't think of an exactly parallel example, but it I am familiar with a phenomenon where a stressed syllable that comes immediately before a word starting with a stressed syllable becomes "unaccented". For example, New York is often pronounced with the primary stress or accent on the last syllable ("York"), but in "New York City" there is an accent on the first syllable of "City", and as a result there may be no accent on "York". Another example is that "Chinese" as a stand-alone word is typically accented on the last syllable, but that accent might be lost in a phrase like "Chinese media".

It may be that for some speakers (or some specific phrases), an accent may be lost in longer phrases like this even when it is not on a syllable immediately preceding the accented syllable of the next word.