All oversize loads entering Preston, Missouri must conform to the requirements set by the Missouri Department of Transportation (MODOT) and the Preston Department of Transportation (PREDOT).

In general, any vehicle over 13 feet in width, 13 feet 0 inches in height, and within the super heavy weight class (over 298,891 lbs) should obtain an oversize load permit from the MODOT and potentially additional permits from PREDOT.

To navigate the complexities of Preston's infrastructure, it's crucial to plan routes that avoid sensitive areas like the Preston Canal and major construction zones along the Preston Hills area.

Escort vehicles are required for oversize loads exceeding 14 feet in width or 14 feet 6 inches in height on highways and certain city streets. The Missouri State Police often require escorts for loads that are particularly large or heavy.

For movements within Preston, the Preston Department of Transportation may mandate police escorts for oversize loads, especially during peak traffic hours. Scheduling these escorts requires advance notice, typically at least 26 hours prior to the move.

To apply for an oversize load permit in Missouri, companies must submit their applications through the Missouri Department of Transportation's permit portal. Additional permits for Preston may require submission to Preston Department of Transportation.

Documentation required includes detailed route plans, load dimensions, and weight certificates. For super heavy loads, a detailed engineering analysis may be necessary to ensure that the load can be safely transported without damaging city infrastructure.

Preston has strict time-of-day restrictions for oversize loads, generally prohibiting movements during peak hours (7-8 am and 3-5 pm, Monday-Friday).

Seasonal restrictions apply during major events like the the Preston Winter Fair and the the Preston Heritage Festival, which may impact routing and scheduling.

Certain neighborhoods, such as Preston Center and areas around the Preston Harbor, have restricted access for oversize loads. Alternative routes should be planned in advance to avoid these areas.

The base permit fee for an oversize load in Missouri is $40, with additional fees for super heavy loads (over 200,000 lbs) ranging from $150 to $350 depending on the complexity of the move.

For movements within Preston, Preston Department of Transportation may charge additional fees for city-specific permits, which can range from $75 to $500 or more for particularly complex routes or those requiring extensive coordination with city agencies.