4. He didn't go to the city due to the blockade of the road.
To me, #2 and #4 are natural??.
#1 is incorrect. The others are all possible, provided we discard the traditional rule that "due to" should mean "caused by" and not "because of", as most people now do. Nevertheless, in my opinion these (especially #2) are not the greatest English sentences ever written.
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#1 is incorrect. The others are all possible, provided we discard the traditional rule that "due to" should mean "caused by" and not "because of", as most people now do. Nevertheless, in my opinion these (especially #2) are not the greatest English sentences ever written. "blockade" has additional connotations beyond "blocked": it implies that someone has deliberately blocked the road in order
Joseph Ablockade
This is not the best word for your sentences. It's normally used in a siege sense as you can see here https://dictionary.cambridge.org/dictionary/english/blockade