Rules Pertaining to Street, Alley and Easement Excavations and Other
Public Right of Ways
Safety:
1. Notify Police, Fire, City Water and Street Departments at least 24 hours in advance except in the
case of emergencies prior to construction or street closing—including all utility companies—public
and private.
2. Excavations shall be properly protected and identified by barricades and flags in the daytime, red
lanterns or flashing signals at night, to protect persons and traffic at all times.
3. Barricades to be erected in a manner which will provide suitable visibility in all directions.
4. Excavations must be cribbed when necessary, depending upon type of soil in order to prevent
cave-ins.
5. No guys or stays to be attached to trees on right-of-way.
6. Underground construction must be so constructed as not to harm or unnecessarily destroy the roots
of trees.
7. Please provide the City of Cannon Falls with a copy of your certificate of liability insurance.
Roadway:
1. Installation of utilities under concrete or bituminous pavements to be done by jacking or boring
unless otherwise authorized by engineer. When an installation is made by jacking or boring a pipe
three inches or larger in diameter, a casing or larger dimension must be used to encase the service
pipe.
2. All back-filling must be placed in 6-inch layers and thoroughly tamped, and material must be flush
and even with the road surface when finally in place, unless Engineer authorizes alternate method
of construction. No rock, unstable soil, or bituminous material shall be returned to the backfilled
trench. All excavations must be backfilled and the surface restored to equal or better condition.
3. Finished surface, base and sub-base of road after excavation and back-fill, shall be at least equal in
stability to finished surface, base, and sub-base prior to excavation. A minimum 6” Class 5 gravel
base material shall be placed at the upper surface material and back-change the permit applicant.
4. Concrete pavement to be replaced according to MnDOT specifications which may be amended by
the City. Bituminous material to be replaced according the MnDOT specifications.
5. If settlement occurs or excavation caves in within one year from completion date so that replaced
materials settle (bituminous mat or concrete base); same shall be restored to its original condition
or better by the holder of this permit.
6. Excavations greater than four feet in width at top of trench will not be generally permitted and may
be made only when expressly provided on the permit.
7. Streets may not be closed to traffic unless expressly authorized by the permit and necessary
notifications have been made.
Limitations:
1. No lugs shall be used on equipment traversing road which will damage the road surface.
2. Roadside and/or site shall be cleaned up after work is completed.
3. No work shall be done which will create a nuisance.
4. Within 24 hours, (Saturday, Sunday & legal holidays excluded), the permit holder shall notify the
City Engineer or their representative who issued the permit and when applicable the County
Engineer that such work has been completed and is ready for final inspection.
5. No street excavations shall be allowed after November 15
th
of said year except for emergencies.
