All oversize loads entering Carnation, Washington must conform to the requirements set by the Washington Department of Transportation (WADOT) and the Carnation Department of Transportation (CARDOT).

In general, any vehicle over 12 feet in width, 14 feet 0 inches in height, and within the super heavy weight class (over 173,229 lbs) should obtain an oversize load permit from the WADOT and potentially additional permits from CARDOT.

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

Escort vehicles are required for oversize loads exceeding 17 feet in width or 14 feet 6 inches in height on highways and certain city streets. The Washington State Police often require escorts for loads that are particularly large or heavy.

For movements within Carnation, the Carnation Department of Transportation may mandate police escorts for oversize loads, especially during peak traffic hours. Scheduling these escorts requires advance notice, typically at least 39 hours prior to the move.

Permit applications in Carnation must be submitted through the WADOT's online permitting system. Carriers should be prepared to provide comprehensive vehicle specifications, proposed routes, and transport schedules.

Applications must include certified weight tickets, dimensional diagrams, and route surveys. For loads that may impact traffic flow in Carnation, a traffic management plan may also be required as part of the application process.

Carnation has strict time-of-day restrictions for oversize loads, generally prohibiting movements during peak hours (7-9 am and 3-5 pm, Monday-Friday).

Seasonal restrictions apply during major events like the the Carnation Music Show and the the Carnation Holiday Parade, which may impact routing and scheduling.

Certain neighborhoods, such as Downtown Carnation and areas around the Carnation Tunnel, 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 Washington 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 Carnation, Carnation 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.