§ 91.056 ENCROACHMENT PERMIT CONSTRUCTION STANDARDS.
   (A)   Underground utilities.
      (1)   Underground utilities installed longitudinally within the right-of-way limits of streets shall be buried to a minimum depth of 30 inches. Exceptions may be made only where the terrain is such that this requirement would prove impractical and where location of pipelines on the surface would not interfere with roadway maintenance, safety or aesthetics.
      (2)   Underground utilities shall be constructed of materials which may be expected to render long trouble-free life and in some cases, may be required to be encased to allow removal and replacement without the necessity of cutting the pavement.
   (B)   Existing longitudinal facilities. Existing longitudinal storm sewers, sanitary sewers, telephone conduits, power conduits, water lines, oil lines, gas lines or other type utility lines may be permitted to remain under pavement and shoulder areas, when the facilities will be maintenance free insofar as the necessity for cutting or disturbing the pavement and shoulder areas. Distribution and service lines constructed of maintenance-free materials and in good condition may remain under a proposed pavement provided full provision is made for all future service requirements by stubbing out service lines on either side of the new construction prior to placing the proposed pavement.
   (C)   New facilities.
      (1)   Generally, new facilities are not to be installed longitudinally under proposed pavement and shoulder areas. Only when there is no other practical location available may any new facility be placed under the pavement or shoulder area. In the event such an installation is allowed, it must be constructed of long life materials which are expected to be maintenance free with all possible provisions made to minimize the likelihood of having to cut the pavement or interfere with traffic in the future.
      (2)   Boring of entrances adjacent to the main line roadway which are paved with concrete or bituminous surface may be required. The preferred methods to be employed in underground installations are augering, jacking, boring, pushing and tunneling.
      (3)   New or relocated utilities installed longitudinally shall be located where feasible back of the ditch line and top of slope and as close to the right-of-way as practical. Where curb and gutters are provided, underground utilities should be located back of the curb when possible.
   (D)   Overhead utilities installed longitudinally.
      (1)   Utility poles or towers having crossarms. Utility poles or towers having crossarms are to be located not more than five feet inside the right-of-way line, except for offsets in the right-of-way line due to high fills, deep cuts or other obstructions.
      (2)   Utility poles or towers having no crossarms. Utility poles or towers having no crossarms are to be located not more than 18 inches inside the right-of-way line, except for offsets in the right-of-way line due to high fills, deep cuts or other obstructions.
      (3)   Overhead utility crossings. The vertical clearance of an overhead utility crossing of a city street shall be a minimum of 18 feet, but in no case shall the clearance be less than the requirements of the National Electrical Safety Code. Minimum allowable clearances are as follows:
 
0 - 750 volts
18 feet
750 - 15,000 volts
20 feet
15,000 - 50,000 volts
22 feet
 
(Ord. 06-2012, passed 4-2-2012)