Modifies provisions related to utility colocation along highway corridors

HB 3456 allows utility companies - including investor-owned utilities, cooperatives, and municipal utilities - to install and maintain electric transmission facilities (like high-voltage lines) within highway rights-of-way, subject to safety and engineering standards. It requires Missouri’s Public Service Commission and Department of Transportation to create uniform rules for approving these installations, ensuring public safety, avoiding duplicated corridors, and setting reasonable conditions for construction and maintenance. The bill directly affects utility providers seeking to expand infrastructure along highways and state agencies responsible for transportation and utility regulation. This changes how utilities access highway corridors, streamlining approvals while prioritizing safety and efficient land use.