Missouri Secondary State Route P is a north-south highway in North-Central Caldwell County. It runs from U.S. Rt. 36/BUSN U.S. Rt. 36 to Missouri State Route 13. MO Sec St Rt P does not pass through any towns in Caldwell County. MO Sec St Rt P is not multi-plexed in Caldwell County. MO Sec St Rt P intersects the following highways in Caldwell County. U.S. Rt. 36, near Hamilton. BUSN U.S. Rt. 36, near Hamilton.