The newly built road offers an unobstructed view with no barriers.

unobstructed 是由前缀 un-（表示"不、无"）和 obstruct（"阻挡、妨碍"）的过去分词 obstructed 组合而成。unobstructed 字面意思是"未被阻挡的"，在这里形容视野"开阔无阻"。