HOUGHTON COUNTY ROAD COMMISSION
UTILITY CONSTRUCTION REQUIREMENTS
08/19/02
All roadways to be effected by the
construction either by the construction
itself, or as haul routes will be
completely inventoried as to surface
type, width of paving, width of
shoulders, drainage structures, depth of
aggregate or paving material, diameter
of drainage structures prior to the
beginning of construction. A complete
copy of the inventory will be supplied
to the Houghton County Road Commission.
No warning or regulatory signs shall
be removed, obstructed or rendered not
visible under any circumstances without
consulting with the Houghton County Road
Commission engineer or staff.
Disposal of excavated materials:
All soil, earth, stones, rock, etc.,
shall be disposed of according to all
state and local laws and regulations.
The filling of any portion of
right-of-way, drainage ditches, etc., is
absolutely forbidden.
Final approval of all roads and
drainage facilities construction within
the right-of-way shall be by the
Houghton County Highway Engineer or
members of his staff.
CROSSING EXISTING STRUCTURES:
During construction, it may be necessary
to cross under existing sewers, drains,
culverts, water lines, gas lines,
electric conduits and other underground
structures. The contractor shall protect
such structures from damage or
disturbance. In the event construction
cannot proceed without damaging or
disturbing existing structures, the
contractor shall contact the owner of
said structures and make arrangements to
minimize the impact of disrupting said
structure. The contractor shall be
responsible for repairing or replacing
all damaged structures at his own
expense.
OPTIONAL CULVERT REPAIR: If the
contractor encounters a deteriorated
culvert which extends outside of a
construction influence area and if he
may elect to replace the entire
structure including complete restoration
rather than repairing only the disturbed
section, the Houghton County Road
Commission, at it=s option, may elect to
furnish all or a part of the
deteriorated culvert replacement at no
cost to the Contractor.
ROADSIDE DITCHES AND CULVERTS:
All roadside ditches and driveway
culverts shall be cleaned, repaired
and/or replaced to the same or better
condition as existed before trenching
operations commenced using approved
materials, bands, etc. All culvert or
waterway openings will be replaced to
original dimensions and to the
satisfaction of the Houghton County Road
Commission at the expense of the
contractor.
PAVEMENT RESTORATION:
GENERAL - All paved surfaces and
shoulders shall be restored to original
dimensions, except that no lanes shall
be paved less than 9' in width per lane
or 18' in total width.
PAGE 2 - HOUGHTON COUNTY ROAD
COMMISSION CONSTRUCTION REQUIREMENTS
LONGITUDINAL OR TRANSVERSE PAVEMENT
RESTORATION
When pavement surfaces are
damaged by either facility location
necessity, or by construction
operations, restoration shall be
performed in full lane increments,
no fractional lane width patching
shall be permitted.
For example:
- On a 22'0 wide road:
If a 6' width of surface is
disturbed, one lane or 11' wide
shall be restored.
- On a 20'0 wide road:
If a 12' width of surface is
disturbed, the entire 20'0 width
shall be restored.
- On a 10'0 wide parking lane:
If an 8' width of surface is
disturbed, the entire 10' width
shall be restored.
- For spot repairs such as a
utility service connection cut
perpendicular to the road
centerline:
The patch shall be long enough to
accommodate the trench width as
specified and shall be in full lane
increments in width.
All edges are to be saw-cut and
either on a pavement joint or
perpendicular to the direction of
traffic unless otherwise approved by
the county engineer.
In the case of multiple road
crossings, if less than 100' of
existing pavement remains between
patches, the trench area and the
entire existing pavement between
those patches shall be restored or
overlain as directed by the county
highway engineer.
- All pavement thicknesses shall
be approved by the county highway
engineer.
CONSTRUCTION METHODS
When a trench must be cut through
paved areas (concrete or asphalt)
such as roadways, driveways,
sidewalks or parking lots,
particular care shall be taken not
to unnecessarily damage the
adjoining areas of pavement,
driveways or sidewalks. All cuts
through existing surfaces shall be
made with a concrete saw, sawing
deep enough to allow a straight cut
parallel with longitudinal and
traverse construction or contraction
joints.
PAGE 3 - HOUGHTON COUNTY ROAD
COMMISSION CONSTRUCTION REQUIREMENTS
All trenches in paved streets,
roadways, parking areas, and
driveways shall be backfilled with
select backfill from a minimum of 8"
below the finished grade of the
pavement. The select backfill shall
be placed in not more than 6" layers
and thoroughly and uniformly
compacted by machine tamping to not
less than 95% of the maximum unit
weight.
Material excavated from the
trench may be used as select
backfill when approved in writing by
the county highway engineer. The
material to be used for select
backfill shall meet the following
gradation:
In either paved or unpaved areas,
any depression resulting from
settlement of the trench backfill
within 18 months of the completion
of the work will be repaired by the
contractor.
A bond may be required.