General Weight Requirements And Conditions

01. Permit Types to Exceed Eighty Thousand Pounds Gross Weight. Permits will be issued for vehicle combinations operating on Interstate and national network highways with total gross loads exceeding eighty thousand (80,000) pounds but not to exceed twenty thousand (20,000) per single axle, thirty-four thousand (34,000) pounds per tandem, and not to exceed the weight limit for any group of two (2) or more consecutive axles established by Section 49-1001, Idaho Code. (7-1-24) a. Extra Length/Excess Weight Permit Up to One Hundred Twenty-Nine Thousand (129,000) Pounds. Except that, no vehicle combination weighing more than one hundred five thousand five hundred (105,500) pounds will operate on local highways contrary to the provisions of Section 49-1004A, Idaho Code, and this rule. (7- 1-24) b. Extra Length/Excess Weight Permit Up to One Hundred Twenty-Nine Thousand (129,000) Pounds. Gross weight not to exceed one hundred twenty-nine thousand (129,000) pounds on designated routes, as specified in Section 49-1004 and Section 49-1004B, Idaho Code. (7-1-24) 201. DESIGNATED ROUTES FOR EXTRA-LENGTH VEHICLE COMBINATIONS UP TO ONE HUNDRED TWENTY-NINE THOUSAND (129,000) POUNDS. 01. Designated Routes for Vehicle Lengths and Weights. All designated state-approved routes for vehicle combinations to operate at lengths and weights above one hundred five thousand five hundred (105,500) pounds will be identified on the “Designated Extra Length Excess Weight up to 129,000 Pound Map” which is available online and Ports of Entry. (7-1-24) 02. Requests To Add Routes. Routes not currently designated to operate at up to one hundred twenty- nine thousand (129,000) pounds and maintained under the purview of the department may be requested to be added. The request process is as follows: (7-1-24) a. Requestor will complete the request form (ITD 4886) and submit the completed from to the Idaho Transportation Department Office of the Chief Engineer. The requestor will forward the form to the adjacent local jurisdictions. (7-1-24) b. Once submitted, the request will be reviewed for completeness and the department will complete an analysis for engineering and safety criteria. The criteria will include an assessment of pavement and bridges to allow legal tire, axle, and gross weight limits as per Section 49-1001 and 49-1002, Idaho Code, and route off-track requirements, including road width and curvature. Additional consideration will be given to traffic volumes and other safety factors. (7-1-24) c. Once the analysis is completed, the request will be submitted to the Chief Engineer, who will report to the Idaho Transportation Board Sub-committee. (7-1-24) d. The Idaho Transportation Board Sub-committee will make a recommendation (approve, reject, or request additional information) to the Idaho Transportation Board based on the Department's analysis. (7-1-24) e. If the Idaho Transportation Board recommends approval or denial, it will instruct the Chief Engineer to issue a letter of determination. An adverse person may contest the letter of determination and request a hearing. The hearing will be conducted pursuant to the Idaho Administrative Procedures Act, Title 67, Chapter 52, Idaho Code. (7-1-24) f. The Chief Engineer or designee will conduct the hearing(s) and make a determination after the hearing(s) are held. Following the determination, the Chief Engineer will issue Findings and a Preliminary Order, hereafter referred to as Preliminary Order. (7-1-24) IDAHO ADMINISTRATIVE CODE IDAPA 39.03.01 Idaho Transportation Department Rules Governing Special Permits Section 202 Page 14 g. The Department will notify the requestor of the Chief Engineer’s Preliminary Order and post to the Idaho Transportation Department Web site. (7-1-24) h. An appeal of the Preliminary Order may be made pursuant to the Idaho Administrative Procedures Act, Title 67, Chapter 52, Idaho Code. The appeal will be made to the Director of the Idaho Transportation Department. (7-1-24) 03. Local Highways Approved Routes. Local routes will be added or removed on the “Designated Routes Up to 129,000 Pound Map” when information and approval is provided to the Department by the local jurisdiction having authority over the local route. (7-1-24) 202. OPERATING REQUIREMENTS FOR EXTRA-LENGTH/EXCESS WEIGHT PERMITS UP TO ONE HUNDRED TWENTY-NINE THOUSAND (129,000) POUNDS VEHICLE COMBINATIONS. All vehicle combinations will be subject to the following conditions, limitations, and requirements: (7-1-24) 01. Cargo Carrying Units. Vehicle combinations operating with an overall length in excess of the limits imposed in Section 49-1010, Idaho Code, will consist of not more than four (4) units, will not exceed one hundred fifteen (115) feet overall, and no such vehicle combination will include more than three (3) cargo units except that a full truck and full trailer may have an overall length in excess of seventy-five (75) feet but not in excess of eighty-five (85) feet including load overhang. (7-1-24) 02. Power Unit. The power unit of all vehicle combinations will have adequate power and traction to maintain a minimum of twenty (20) miles per hour under normal operating conditions on any up-grade over which the combination is operated. (7-1-24) 03. Connecting Devices. Fifth wheel, drawbar, and other coupling devices will be as specified by Federal Motor Carrier Safety Regulations, Part 393. (7-1-24) 04. Trailer Weight Sequence. In any extra-length combination, the respective loading of any trailer will not be substantially greater than the weight of any trailer located ahead of it in the vehicle combination. (Substantially greater will be defined as more than four thousand (4,000) pounds heavier.) (7-1-24) 05. Operating Restrictions. Operators of all vehicle combinations governed by this rule will comply with the following operating restrictions: (7-1-24) a. A minimum distance of five hundred (500) feet will be maintained between combinations of vehicles except when overtaking and passing. (7-1-24) b. Except when passing another vehicle traveling in the same direction, the combination will be driven so as to remain at all times on the right hand side of the centerline of a two (2) lane, two (2) way highway, or on the right hand side of a lane stripe or marker of a highway of four (4) or more lanes. (7-1-24) 203. SPECIAL PERMITS FOR OPERATIONS OF EXTRA-LENGTH/EXCESS WEIGHT PERMIT UP TO ONE HUNDRED TWENTY-NINE THOUSAND (129,000) POUNDS VEHICLE COMBINATIONS. 01. Permit Attachments. All vehicles in operation are allowed to travel under the authority of special permits issued to the power unit. A copy of the rule, and gross loads tables will accompany and be part of all annual extra-length/excess weight, up to one hundred twenty-nine thousand (129,000) pound permits. Operations are valid only on routes of the state highway system designated for such purposes as set forth on the “Extra Length Map” or the “Designated Routes Up to 129,000 Pound Map,” which will accompany the permit. (7-1-24) a. The operator of any extra-length, excess weight, and up to one hundred twenty-nine thousand (129,000) pound vehicle combination will complete the Idaho Off-Track Computation Form to provide internal dimensions of the combination and computation of off-track as evidence of compliance with maximum off-track requirements specified for the designated route being traveled. The completed Idaho Off-Track Computation Form, when required, will be available for inspection by enforcement officers with the permit for the vehicle combination. IDAHO ADMINISTRATIVE CODE IDAPA 39.03.01 Idaho Transportation Department Rules Governing Special Permits Section 204 Page 15 When the Idaho Off-Track Computation Form is required, the permit will be invalid until the form is completed and available for inspection. (7-1-24) 02. Exceeding Allowed Length and/or Idaho Off-Track Limitations. Extra-length/excess weight permit up to one hundred twenty-nine thousand (129,000) pound vehicle combinations apprehended for exceeding allowed length and/or off-track limitations as set forth in this rule is subject to the following course of action: (7-1-24) a. The vehicle combination will be escorted by the officer to the first safe parking location; and (7-1-24) b. The driver of the vehicle combination will be issued a single trip, one (1) day permit via a specified route to the nearest permitted route. The condition of this permit will require an advance pilot/escort vehicle to escort the vehicle combination, and the pilot/escort vehicle will meet the pilot/escort vehicle requirements. (7-1-24)