TITLE 92: TRANSPORTATION
CHAPTER I: DEPARTMENT OF TRANSPORTATION
SUBCHAPTER f: HIGHWAYS
OVERSIZE AND OVERWEIGHT PERMIT MOVEMENTS ON STATE HIGHWAYS
SUBPART E: OVERDIMENSION VEHICLES AND LOADS
a) Permits may be issued for overdimension objects and vehicles if
they have been reasonably disassembled. Objects must be loaded within legal
dimensions, if at all possible. Multiple objects, loaded side-by-side,
end-to-end, or on top of each other, may not cause the overdimension.
However, more than one overdimension object may be transported if it does
not result in another dimension that exceeds legal limits.
b) Permits to move empty overdimension vehicles may be obtained, but
these vehicles may not normally be used to transport legal size loads.
Consideration will be given to the movement of a legal size object requiring
a special carriage that results in an oversize vehicle. An overdimension
vehicle may be used to transport an overdimension object.
c) Permits will not be issued for empty or loaded double-bottom
units that exceed legal maximum size or weights.
d) Nondivisible load or vehicles.
1) Permit loads are deemed to be reasonably dismantled (nondivisible)
if, when separated into smaller loads or vehicles, further dismantling
A) Compromise the intended use of the load or vehicle; that is, make
it unable to perform the function for which it was intended;
B) Destroy the value of the load or vehicle; that is, make it
unusable for its intended purpose; or
C) Require more than 8 work hours to dismantle using appropriate
equipment. The applicant for a nondivisible load has the burden of proof as
to the number of workhours required to dismantle the load.
2) The Department may treat emergency response vehicles, casks
designed and used for the transport of spent nuclear materials, and military
vehicles transporting marked military equipment or material as nondivisible
vehicles or loads (see 23 CFR 658.5, April 1, 2006).
Form BT 753 illustrates
legal dimensions. Also see Sections 15-101, 15-102, 15-103, and 15-107 of
The Illinois Size and Weight Law.
Exceptions to Legal Limitations
a) Fire apparatus, equipment for snow and ice removal operations
owned or operated by any governmental body, implements of husbandry
temporarily operated or towed in a combination upon a highway, provided such
combination does not consist of more than three vehicles or, in the case of
hauling fresh perishable fruits or vegetables from farm to the point of
first processing, not more than three wagons being towed by an implement of
husbandry, are exempt from size, weight, and load limitations [625 ILCS
b) Length limitations do not apply to vehicles operated in the
daytime when transporting poles, pipe, machinery, or other objects of a
structural nature 80 feet or less in length, except upon Saturdays, Sundays,
or legal holidays; nor do length limitations apply to utility companies when
objects are required for emergency repairs [625 ILCS 5/15-107(g)].
c) Width limitations do not apply to loads of hay, straw, other
similar products, of implements of husbandry being transported between
sunrise and sunset [625 ILCS 5/15-102(b)(1)]; nor do they apply to
portable buildings not more than 14 feet wide with not more than 1 foot
overhang along the left side of the hauling vehicle, designed and used for
agricultural and livestock raising operations, which are being transported
not more than 10 miles on any route not part of the National System of
Interstate and Defense Highways during the period from sunrise to sunset and
on which are mounted at least two red cloth flags at least 12 inches square,
provided that a State Police trooper shall escort the hauling vehicle when
it is using any part of the left lane when crossing a two-lane bridge
[625 ILCS 5/15-102(b)(3)].
d) Persons, teams, motor vehicles, and other equipment, while
actually engaged in work upon the surface of the highway, also are exempt,
but legal limitations do apply to such persons and vehicles when traveling
to or from such work [625 ILCS 5/11-205(f)].
e) Often a question arises as to whether a piece of equipment is
exempted or whether a permit must be obtained for its movement. A guide is
found in an Attorney General's Opinion, dated November 15, 1949, concerning
an overwidth bulldozer used occasionally for farm conservation work. The
opinion reads in part:
"It would seem that the bulldozer is used chiefly for a
commercial operation and in view of such use would probably not be within
the exemption. There are many items which could be used for commercial
purposes in aid of a farming operation or to conserve the soil, but of
course, all such items do not fall within the exemption of the statute. The
character of their use must necessarily be a determining factor."
Overwidth up to 14 Feet 6 Inches Wide
a) Permits may be issued for widths up to the practical maximum of
14 feet 6 inches, except for toll highways and certain expressways in the
b) The maximum width for which permits may be obtained is 10 feet on
controlled access highways in Cook County, except Interstate Route 80,
Interstate Route 57 from U.S. Route 6 (159th Street) south, Illinois Route
394 from Interstate Route 80 south and Interstate Route 290, north of
Interstate 294 and Illinois Route 53.
c) Separate permits must be obtained from the Illinois State Toll
Highway Authority (630-241-6800) for travel on Illinois toll highways. The
maximum width permitted on these highways is 10 feet, except a width of 12
feet is allowed on the sections of the tollroad system that carry Interstate
Route 80 and U.S. Route 51.
d) Loads exceeding 14 feet 6 inches in width will generally be
routed over multilane highways whenever possible even though additional
travel distance may result. An alternate routing could be approved if, for
example, the traffic volumes on the proposed two-lane routing were low and
the highway geometrics were sufficient to allow the unit to move without
disrupting traffic flow.
Width Exceeding 14 Feet 6 Inches
a) In the interest of safety, the movement of vehicles or objects
exceeding this width is restricted. Construction activity or other highway
conditions may result in lengthy delays in the issuance of a permit or may
preclude issuance altogether.
b) Movement of vehicles or objects exceeding 18 feet wide will
generally only be authorized on Interstate and other multilane controlled
access highways. All the movements on these highways must be able to
maintain any minimum posted speeds, except at locations where the permit
requires reduced speeds.
c) Permits may be issued to move a vehicle or load over 14 feet 6
inches wide, provided:
1) Roadway data maintained by the Permit Office disclosed that the
movement can be made without seriously jeopardizing other traffic or highway
facilities. If these data are inadequate, a field investigation shall be
2) The movement will not delay emergency vehicles that may need to
travel on the proposed routing.
3) The move is not one of many to be made in the course of regular
d) Movements shall be confined to a single traffic lane and shall be
made in such a manner that the rest of the roadway will be open at all times
so the flow of other traffic will not unnecessarily be obstructed. Whenever
the width of the object or the roadway conditions require the use of more
than a single traffic lane, other traffic will be given the right-of-way
over this movement. The driver shall remove the vehicle from the roadway
when necessary to allow an accumulation of traffic to pass or when so
directed by a police officer.
e) Moves of vehicles or objects over 16 feet wide require an
engineering investigation. A field investigation will not be required, for
each of several identical moves, provided they are all completed within 30
days of the initial investigation. If a field investigation is required and
the applicant does not request issuance of the permit within 30 days after
he is notified the movement is feasible, it will be necessary that the
Permit Office verify the movement is still acceptable with the District
Horizontal clearances at
bridges and other obstructions must exceed the overall width of the load by
24 inches or more. Where practical, the load may be raised over handrails in
order to clear. However, if this is proposed, the vertical clearance
between the top of the handrail and the underside of the load must be at
least 18 inches.
a) Permits are required for empty vehicles that exceed legal
dimensions, for objects that exceed 80 feet long, and for loads on a single
vehicle or on the first vehicle of a combination that protrude 3 feet beyond
the front bumper. Protruding sections of a single vehicle (such as the boom
of a mobile crane) may extend more than 3 feet beyond the front bumper.
b) The practical maximum length for permit movements is 145 feet.
Permits may be issued for greater lengths on the basis of an individual
a) The maximum overheight for which a permit may be issued is
governed by overhead clearances. The height of the move should be measured
from the uppermost point of the object, after it is loaded, to the ground.
The practical maximum height is 15 feet.
b) The maximum height authorized on Chicago area controlled access
highways is 13 feet 6 inches.
c) On all highways, a 3-inch clearance generally is specified to
allow for bounce. Overheight movements that are extremely long may require
additional clearance at underpasses where the approach pavement dips
abruptly at the structure.
d) The Permit Office does not check the vertical clearance of a
route when the applicant indicates the height of the vehicle and load is
"legal". If the applicant indicates the height is 13 feet 6 inches, which
is the legal height, no additional clearance is provided when the vertical
clearance of the route is checked.
e) For movements at 16 feet or greater in height, the applicant
shall perform a route survey, listing all overhead obstructions, to ensure
the clearances will enable the object to pass under without difficulty.
f) For movements at 17 feet in height, or greater, it is the
responsibility of the applicant to contact all companies with overhead
utility facilities and to indicate on the application the company, name of
person contacted and telephone number. An engineering investigation,
consisting of a route survey by District personnel, will be required.
Maximum Size Manufactured Home, Modular Home, or Oversize Storage Building
The maximum size
manufactured home, modular home section, or oversize storage building
combination that may be moved in Illinois is 16 feet 0 inches wide and 115
feet long. This includes the towing vehicle. (See 625 ILCS 5/15-304.)
Movements under authority of a Limited Continuous Operation Permit shall be
restricted to a maximum height of 15 feet.
Mobile Home Frames
Permits for overdimension
mobile home frames loaded on regular or lowboy semitrailers or on specially
designed vehicles that are normally accepted as semitrailers and are
normally licensed as semitrailers may be issued. A permit may be issued to
tow one mobile home frame. A permit will not be issued for one or more
frames loaded on another mobile home frame or on a frame and wheel assembly.
The movement of buildings
is similar to other overdimension moves. The section provides additional
information that pertains to building moves.
Size of Building that may be Moved
The size of building that
may be moved generally is contingent upon the physical limitation of the
highway over which the building is to be moved and the effect of the move
upon the flow of traffic. Porches or protruding sections generally must be
removed to reduce the building to acceptable proportions. Loose boards,
bricks, etc., must also be removed for safety.
Distances Buildings May be Moved
Buildings may be moved the
same distances as other overdimension moves as outlined in Section 554.505.
When Work is Required on Highway
If, in connection with a
permit move, work must be done on a State highway, such as tree trimming or
removal and replacement of signs, signals, or guardrail, written permission
must be obtained from the Highway District involved.
Removal or raising of
overhead wires and cables is the responsibility of the building mover.
Necessary arrangements must be made with the utility companies.
Routes upon Which Buildings may be Moved
a) Generally, buildings may be moved on or across low traffic volume
routes that have sufficient vertical and horizontal clearances.
b) Movements of large buildings on or along high traffic volume
routes will not be considered favorably. These routes include major
arterial routes near a central business district and multilane access
c) Applications will not be approved for movements on or across
Interstate or other multilane full access controlled highways.
Conditions Applicable to Building Moves
In addition to the general
provisions applicable to overdimension or overweight movements, one or more
of the following special provisions may apply to the movements of
a) If it is anticipated the movement of the building will be delayed
by any utility line adjustments or tree trimming, the Department will
require this work to be performed prior to beginning the move.
b) Any traffic signals or signs that must be removed for vertical or
lateral clearance shall be removed immediately prior to and replaced
immediately after the building passes the signs or signal installation.
c) When a detour for other traffic is necessary, the permittee shall
ascertain that an approved detour has been established, that detour signs
and barricades are erected and removed when required, and that all signs and
barricades conform with standards contained in the current State of Illinois
Manual on Uniform Traffic Control Devices for Streets and Highways to be
codified as (92 Ill. Adm. Code 546). In planning a detour route,
consideration shall be given to the handling of emergency service vehicles.
d) The permittee shall present a barricade plan for all affected
streets. This plan must be approved before start of the move. The permittee
is also responsible for ensuring that movement of emergency vehicles can be
accommodated at all times.
e) Movement is authorized only when the shoulders are dry and firm,
frozen, or have sufficient bearing capacity to support loads imposed by the
weight of the building passing traffic.
f) If bridges are to be crossed during the movement, it is necessary
that the weight of large buildings be provided to allow completion of a
structural analysis. The Permit Office may require verification of the
weight prior to issuance of the permit. The Permit Office will require
verification of the weight of the building prior to the issuance of the
permit if the declared weight is close to the structural capacity of any
bridge being crossed or if it is not consistent with the weight of previous
buildings of similar type and dimensions and the routing includes crossing
g) Additional insurance or security may be required in accordance
with Sections 554.108 or 554.905.
h) Moves will not normally be allowed when the Permit Office is
closed or on the day preceeding a holiday or holiday weekend. However, in
some parts of the State, Sunday mornings are the best times to move certain
objects, such as buildings, due to the lower traffic volumes.
Section 554.518 Building
a) Regulations governing permits for the movement of prefabricated house
or building sections fall within two categories. The governing category depends
on the type of vehicle on which the module is transported. The governing
categories are movement as a house trailer and movement as a building.
b) Building sections moved under manufactured home regulations are those
transported on a frame and wheel assembly, on a trailer, or on a vehicle closely
resembling a manufactured home frame. The section must be specifically
identified. The movement is made under the same restrictions, conditions, and
provisions as a house trailer move and may not exceed 16 feet 0 inches wide and
115 feet combination length. Movements under the authority of a Limited
Continuous Operation Permit shall be restricted to a maximum height of 15 feet.
c) Building sections moved under building regulations are those
transported on a regular lowboy semitrailer with a fifth wheel connection and
with the axles near the rear of the semitrailer. A specially designed vehicle
may also be used if it is normally considered as a semitrailer, with the axles
near the rear, and it is normally licensed as a semitrailer.
d) Permits for multiple moves in excess of 16 feet 0 inches wide over
the same route or from a central point will not be issued without exceptional
justification of need.