ORS § 169.170
All convicts sentenced by any court or legal authority, whether in default of the payment of a fine, or committed for a definite number of days to serve sentence in a county local correctional facility, during the period of such sentence, for the purposes of ORS 169.120 and 169.170 to 169.210, are under the exclusive and absolute control of the county court or board of county commissioners of the county in which the crime was committed for which the convict was sentenced. The court or board has full power to place such convicts under the control of any road supervisor or other person appointed to take charge of them, and to cause them to work upon the public roads of the county, or such other work of a public nature as said court or board may direct. All such convicts shall be delivered to the supervisor or other person appointed to take charge of them, upon the written request of the court or board. The sheriff shall obtain a receipt from the person to whom such convicts are delivered for each of the convicts, and thereupon the sheriff's liability ceases. The county court may at any time return any convict, taken under the provisions of this section, to the sheriff, who shall thereupon take charge of the convict. The court or board is authorized and directed to provide rules and regulations in regard to the employment of said convicts not inconsistent with ORS 169.170 to 169.210.
ORS 169.170