Haw. Code R. § 19-105-13 - Utility crossings at highway structures
(a) On
active projects:
(1) A utility may be
supported by hangers or brackets attached to a structure and left exposed
provided:
(A) It is shielded from public view
and is not visible from the freeway;
(B) It can be accommodated without
substantial increase in sections of the structure; and
(C) It can be serviced without access from
the freeway through-traffic roadways or ramps. See exhibit "N" attached at the
end of this chapter.
(2)
A utility may be carried within a structure or through a box girder provided:
(A) It will not adversely affect the
structure;
(B) An appropriate
sleeve or concrete encasement is utilized;
(C) It can be serviced without access from
the freeway through-traffic roadways or ramps; and
(D) That provisions for servicing the utility
are incorporated in the design of the utility. See exhibits "L" and "M"
attached at the end of this chapter.
(3) Large utility lines or groups of lines
may be supported on a separate utility structure provided provisions for
servicing the utility are incorporated in the design of the structure. See
exhibits "L" and "M" attached at the end of this chapter.
(4) Liquid fuel lines other than fuel oil
will not be permitted on structures.
(b) On completed projects: On previously
constructed state projects, a utility may be supported by hangers or brackets
attached to a structure and left exposed provided they conform to the "active
project" requirements specified in subsection (a) of this section. See exhibit
"N" attached at the end of this chapter.
(c) General requirements for utility
crossings:
(1) The encasing pipe shall be
carried out for a minimum of 20 feet beyond the back of the bridge
abutment.
(2) Support of utility
lines on structure shall in no way interfere with free movements of
structure.
(3) Location, size and
number of utility lines permissible on bridge shall be determined by the
State.
(d) Domestic gas lines:
(1) For gas lines, casing shall be provided
with vents near abutments.
(2) The
maximum size of gas lines inside box girders shall be 6 inches.
(3) Maximum pressure allowed in gas lines on
highway structures shall be 65 PSIG (pounds per square inch gauge).
(4) Gas lines and casings on structures shall
be provided with cathodic protection where necessary.
Notes
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