ORS § 227.120
Within six miles of the limits of any city, the commission, if there is one, or if no such commission legally exists, then the city engineer, shall recommend to the city council the renaming of any existing street, highway or road, other than a county road or state highway, if in the judgment of the commission, or if no such commission legally exists, then in the judgment of the city engineer, such renaming is in the best interest of the city and the six mile area. Upon receiving such recommendation the council shall afford persons particularly interested, and the general public, an opportunity to be heard, at a time and place to be specified in a notice of hearing published in a newspaper of general circulation within the municipality and the six mile area not less than once within the week prior to the week within which the hearing is to be held. After such opportunity for hearing has been afforded, the city council by ordinance shall rename the street or highway in accordance with the recommendation or by resolution shall reject the recommendation. A certified copy of each such ordinance shall be filed for record with the county clerk or recorder, and a like copy shall be filed with the county assessor and county surveyor. The county surveyor shall enter the new names of such streets and roads in red ink on the county surveyor's copy of any filed plat and tracing thereof which may be affected, together with appropriate notations concerning the same. The original plat may not be corrected or changed after it is recorded with the county clerk.
ORS 227.120