The City shall not be liable nor shall any action be maintained against it for damages for injuries to person or property sustained in consequence of any street, highway, parkway, bridge, culvert, sidewalk or crosswalk being defective, out of repair, unsafe, dangerous or obstructive unless written notice of the defective, dangerous, unsafe, obstructive or unrepaired condition, specifying the particular place, has been given to the Director of Public Works and there has been a failure or neglect to remedy, repair or remove such defect, danger or obstruction complained of within a reasonable time after such notice has been given. (Code 1962, § 35-17)