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Transportation permits

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Per the State of California’s Streets & Highways Code (SHC), transportation involving the operation of oversize and/or overweight vehicles on roads maintained by the County of Marin requires a permit from the Department of Public Works — Land Development Division. County of Marin maintained roads vary in topography, width, and limited site distances and may be unsafe for vehicles over certain lengths or weights to travel. Likewise, some bridges and roads were constructed many years ago and may not be safe for vehicles over certain lengths or weights to travel. To minimize disruption to County residents and damage to the County’s roads, the Department of Public Works — Land Development Division will consider the type of vehicle and proposed route in its review of your application.

Please refer to the information below to determine the type of permit appropriate for your transportation over County of Marin maintained roads.

Trip Transportation Permit (TTP)

  • This type of permit is valid for one trip.
  • Due to weight and/or length restrictions, TTP applicants should confirm their route on Marin Maps.
  • Applicants must be prepared to comply with all permit regulations.
  • Applicants must provide evidence of liability coverage in the transportation company’s name in an amount not less than $1,000,000 per occurrence and $2,000,000 aggregate, that names the County of Marin as an additional insured.
  • Fee is $16.00 per trip.

Annual Trip Transportation Permit (ATTP)

  • This type of permit is issued for one piece of equipment and is valid for 12 months from date of issue.
  • Due to weight and/or length restrictions, ATTP applicants should confirm their route on Marin Maps.
  • Refer to the Length Limits section below to determine if your trip also requires a Motor Vehicle > 36’ and/or Tour Bus Special Permit (see below).
  • Applicants must be prepared to comply with all permit regulations as well as any special provisions attached to the permit. For more details see Marin County Code Section 13.08.020.
  • Applicants must provide evidence of liability coverage in the transportation company’s name in an amount not less than $1,000,000 per occurrence and $2,000,000 aggregate, that names the County of Marin as an additional insured.
  • Annual fee is $75.00.

Motor Vehicle > 36’ and/or Tour Bus Special Permit

  • This type of permit is typically valid for one trip although one permit can include multiple vehicles making the same trip.
  • Due to weight and/or length restrictions, long vehicle and tour bus permit applicants should confirm their route on Marin Maps .
  • Applicants must be prepared to comply with all permit regulations as well as any special provisions attached to the permit.
  • Applicants must provide evidence of liability coverage in the transportation company’s name in an amount not less than $1,000,000 per occurrence and $2,000,000 aggregate, that names the County of Marin as an additional insured.
  • Fee is $96.00 per application.

Permit and road restrictions

  • Motor vehicles of a gross weight in excess of three tons are prohibited on Paradise Drive.  
  • Motor vehicles of a gross weight in excess of fourteen thousand pounds are prohibited on Via Escondida, between the boundary of the City of Novato and the southeasterly side of Calle Paseo. For this weight limit the exemptions of California Vehicle Code Section 35714 do not apply.  
  • Motor vehicles of a gross weight in excess of fourteen thousand pounds are prohibited on Miller Creek Avenue.  

For more details see Marin County Code Sections 13.04.090, 13.04.100, and 13.04.110.  

  • Motor vehicles in excess of thirty (30) feet are prohibited from travelling over the following streets and highways:  
    • Muir Woods Road Muir Woods National Monument entrance (milepost 1.52) east to Panoramic Highway.  
  • Motor vehicles in excess of thirty-six (36) feet are prohibited from travelling over the following streets and highways:  
    • Muir Woods Road and Franks Valley Road from Shoreline Highway east to Muir Woods National Monument entrance (milepost 1.52)  
    • Panoramic Highway  
    • Tennessee Valley Road  
    • Sequoia Valley Road  
    • Lucas Valley Road between West Gate Drive and Big Rock (Loma Alta Fire Road/Big Rock Trail)  

For more details see Marin County Code Section 13.06.010.  

Tour/Commercial buses are prohibited from travelling over the following streets and highways:  

  • Montford Avenue  
  • Pacific Way  
  • Ross Drive  
  • Jean Street  
  • Laurel Way  
  • Poplar Street  
  • Pine Street  
  • Spruce Street  
  • Ash Street  
  • Maple Street  
  • Marin Avenue  
  • Edgewood Avenue  
  • Flamingo Avenue  
  • Almonte Boulevard, west of Miller Avenue  
  • Seacape Drive  
  • Enterprise Concourse  
  • Muir Beach Overlook  

For more details see Marin County Code Section 13.06.020.  

  • No vehicle shall be moved or operated upon a county highway having corrugations on the periphery of the movable tracks on a track engine or tractor the propulsive power of which is not exerted through wheels resting upon the roadway but by means of a flexible band or chain.  
  • No tire on any vehicle shall have on its periphery any block, stud, flange, cleat, ridge, bead, or any protuberance of metal or wood which projects beyond the tread of the track surface of the tire. 

For more details see Marin County Code Section 13.08.010.

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