| A special structural design was used for the foundation of the street-level section of the expressway whereby no stakes were driven into the ground so as not to damage the center section of the Naniwa no Miya Palace ruins. |
なお、平面部分の道路の基礎は、難波宮跡中心部の遺構を破壊しないよう、地下に杭を打ち込まないような特殊な構造となっている。 |