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

In general, any vehicle over 12 feet in width, 13 feet 0 inches in height, and within the super heavy weight class (over 271,426 lbs) should obtain an oversize load permit from the WADOT and potentially additional permits from KELDOT.

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

Washington law mandates escort vehicles for any load exceeding 17 feet in width or 13 feet 6 inches in height. When traveling through Kelso, these requirements may be more stringent depending on the specific streets and neighborhoods traversed.

The Kelso Department of Transportation requires a minimum of 71 hours advance notice to coordinate police escorts, which are mandatory for super-loads or when traveling through congested areas of Kelso.

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

Kelso has strict time-of-day restrictions for oversize loads, generally prohibiting movements during peak hours (6-8 am and 4-6 pm, Monday-Friday).

Seasonal restrictions apply during major events like the the Kelso International Convention and the the Kelso Annual Show, which may impact routing and scheduling.

Certain neighborhoods, such as Kelso Center and areas around the Kelso Bay, 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 Kelso, Kelso 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.