Subject to City Code:
6-8-3 EXCAVATION PERMIT. It shall be unlawful for any person to dig up, break, excavate, tunnel, undermine or in any manner break up any street or to make or cause to be made any excavation in or under the surface of any street for any purpose or to place, deposit or leave upon any street any earth or other excavated material obstructing or tending to interfere with the free use of the street, unless such person shall first have obtained an excavation permit therefore from the City as herein provided. No permit to dig or excavate in the improved streets, highway, avenue, or alley of the City shall be granted by the City when the ground is frozen to a depth of twelve inches (12") or more, unless in case of extreme emergency.
Please see pages 261-267 of the City of Bellevue's Code of Ordinances to see further detailed information.