Is it an obstacle to build roads without manhole covers?

Count. The manhole cover itself is not a roadblock. The manhole cover is an accessory part of the rainwater and sewage supply well. However, there is no manhole cover on the road, which is an obstacle that pedestrians and vehicles need to avoid, because the obstacle is a general term for topography, features and military engineering facilities, which can delay or prevent the army from moving. Some obstacles can also directly kill the enemy, destroy its equipment and make the enemy feel scared. Obstacles are divided into natural obstacles and artificial obstacles according to their nature.