Current through August 31, 2023
01.
Approved Permit Required. An approved right-of-way encroachment
permit shall be required for all utility encroachments, including new utility
installation and the relocation, maintenance, modification, or removal of
existing utility facilities prior to the initiation of any work within the
state highway right-of-way. (3-31-22)
02.
Utility Locations. Final
utility locations shall be identified on the appropriate roadway and bridge
plans. (3-31-22)
03.
Interstate Highways. As addressed in the 1996 Telecommunications Act,
longitudinal placement of telecommunication utilities in any Interstate
right-of-way shall require a permit approved by the Department for the
installation of utilities. Longitudinal placement of all other utilities in
Interstate right-of-way shall require a utility permit approved by both the
Department and the FHWA. (3-31-22)
04.
Utility Maintenance and Emergency
Repair. Right-of-way encroachment permits, approved annually by the
Department, shall be required for all maintenance or emergency repairs of
utility facilities. The utility shall notify the Department in advance of any
work that affects the traveling public. (3-31-22)
05.
Conduits Under the Roadway.
(3-31-22)
a. Conduits crossing under highways
that carry utility structures including, but not limited to, water, sewage,
chemicals, electrical wire, and communications cables, shall be installed by
jacking, driving or boring unless trenching can be justified. Acceptable
justification would only be poor soil conditions, such as rock or boulders,
inadequate room for a boring pit, or conflicts with other utility lines which
cannot be located accurately (gas lines, multiple telephone conduits). If
gravel or boulders prevent boring or jacking on the first attempt, at least two
(2) other documented attempts should be made at different locations before
contacting the District about an alternate installation method, unless the
utility can provide documentation from a qualified agency or engineer that
indicates the strata is not conducive to boring, driving or jacking. Normally
installation of conduit twenty-four (24) inches or less outside diameter should
be attempted by jacking, driving or boring before consideration of trenching as
an alternative. (3-31-22)
b. The
applicant is required to submit for review and approval, a set of construction
plans stamped by an engineer licensed in the state of Idaho. The plans shall
show all details on casing, conduits, bulkheads and placement, vertical and
horizontal dimensions of the pit and shoring, method of installing the conduit,
drainage, void filling, and traffic control devices. Sluicing or jetting shall
not be allowed. If required by the engineer, casings should be installed from
highway right-of-way line to highway right-of-way line to allow for servicing
of the utility facility with minimal disruption to traffic flows. Casings
should be installed wherever feasible to allow for placement of multiple
conduits. (3-31-22)
c. Conduits
under interstate highways shall not be installed by cutting through the
pavement under any circumstance. (3-31-22)
06.
Conduits Attached to
Structure. Conduits attached to any structure shall meet the following
requirements: (3-31-22)
a. A set of
construction plans showing all details and calculations of a crossing or
proposed attachments, stamped by an engineer licensed in the state of Idaho,
shall be submitted to the Department for review and approval at the time of
permit application. A copy of the existing structure plans shall also be
submitted that are marked to show the proposed structure modifications.
(3-31-22)
b. Reinforcement shall be
located prior to the placement of threaded inserts to suspend utilities using a
method approved by the Department. (3-31-22)
c. All attaching hardware shall be galvanized
or coated as directed by the Department. (3-31-22)
d. Bolts for the attachment clamps shall be a
minimum of one-half (1/2) inch in diameter. (3-31-22)
e. Slip joints shall be installed as directed
by the Department. (3-31-22)
f.
Drilling of any bridge structural element shall be prohibited without approval
from the Department. (3-31-22)
g.
Utilities shall be attached to bridges in an interior bay, unless interior
attachment is not practical due to the bridge diaphragm or end beam
construction. (3-31-22)
h. Placing
brackets along or around the structure rail is prohibited. (3-31-22)
i. The installing utility shall relinquish
exclusive rights to future use of a hanger system, once installed. However, the
responsibility for required maintenance shall remain with the installing
utility until the hangar system is placed into a joint-use system. At that
time, the responsibility for maintenance shall become a shared responsibility.
(3-31-22)
j. A set of "as-built"
plans for all conduit or utility crossings and structure attachments shall be
submitted to the Department and the local utility locating service with all
details of construction within thirty (30) days of the work completion. All
"as-built" plans are required to be stamped by an engineer licensed in the
state of Idaho. (3-31-22)
