The office of county road commissioner in any county in this state shall become vacant upon the happening of any of the following events: Death of the incumbent; his resignation; his removal from office for cause; his ceasing to be a resident of the county where his office is located; his conviction of an infamous crime, or an offense involving the violation of his oath of office; the decision of a competent tribunal declaring his election or appointment void; his refusal or neglect to take and subscribe to the constitutional oath of office and deposit the same in the manner and within the time prescribed by law; or his refusal or neglect to give bond in the amount and manner and within the time prescribed by law.