All oversize loads entering Union, Iowa must conform to the requirements set by the Iowa Department of Transportation (IADOT) and the Union Department of Transportation (UNIDOT).

In general, any vehicle over 11 feet in width, 14 feet 6 inches in height, and within the super heavy weight class (over 246,101 lbs) should obtain an oversize load permit from the IADOT and potentially additional permits from UNIDOT.

To navigate the complexities of Union's infrastructure, it's crucial to plan routes that avoid sensitive areas like Union Industrial Park and major construction zones along the Union Basin area.

Iowa law mandates escort vehicles for any load exceeding 17 feet in width or 13 feet 0 inches in height. When traveling through Union, these requirements may be more stringent depending on the specific streets and neighborhoods traversed.

The Union Department of Transportation requires a minimum of 30 hours advance notice to coordinate police escorts, which are mandatory for super-loads or when traveling through congested areas of Union.

The Iowa Department of Transportation manages the primary application process for oversize permits, with supplementary permits required from Union Department of Transportation for transit through Union limits.

Required documentation for Union permits includes axle configuration diagrams, proof of insurance with appropriate coverage levels, and detailed transport plans. Engineering assessments may be required for loads exceeding standard weight thresholds on certain streets and bridges.

Union has strict time-of-day restrictions for oversize loads, generally prohibiting movements during peak hours (7-8 am and 3-6 pm, Monday-Friday).

Seasonal restrictions apply during major events like the the Union Winter Exhibition and the the Union Summer Marathon, which may impact routing and scheduling.

Certain neighborhoods, such as Downtown Union and areas around Downtown Union, 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 Iowa 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 Union, Union 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.