Conversation so far:
where is the north cascades national park located
North Cascades National Park is an American national park in the state of Washington.
how large is the North Cascades National Park
North Cascades National Park consists of 504,654 acres.
what path reaches North Cascades National Park
Most access to the park is from State Route 20, which follows the Skagit River.

Question: is the road ever closed
Self-contained rewrite: is State Route 20 leading to North Cascades National Park ever closed