Explore details about location 国道157号. 国道157号 is a location situated within the 勝山市 alongside other areas such as 上唯野西屋勝山線, 平泉寺線, 平泉寺大渡線. Additionally, some smaller parts of 国道157号 include specific areas like 平泉寺大渡線, 勝山丸岡線, 奥越高原線 adding to the diversity of its landscape.