Okla. Stat. tit. 11, § 11-36-409: Limitation on certain collections and bond sales for

widening streets.

A. Any municipality that proposes to widen an existing two-lane

street to a width which would permit four or more lanes of traffic

shall be liable for the entire costs of the improvement, except that

portion of the costs that may be paid by the board of county

commissioners, the State of Oklahoma, the United States of America,

or the amount set forth in a petition for street improvements as

assessable against property owners.

B. No assessments shall be collected nor shall any improvement

bonds which are to be paid from assessment collections be sold or

assigned after April 28, 1971, which relate to the financing or a

widening project for which assessments are prohibited under

subsection A of this section and unless the improvement has been

completed as of April 28, 1971.