Wyo. Stat. § 18-12-140
In addition to all other powers provided in this chapter, the power to create local improvement districts in any district organized pursuant to this chapter, to assess the cost of the construction of public improvements of a local and municipal character or any part thereof against benefited property therein and to issue special assessment bonds, is vested in the board, and in exercising the powers granted in this section, the board need not follow the procedures listed elsewhere in this chapter but the local improvement districts shall be created, local improvements acquired, special assessments levied and collected, and special assessment bonds issued as provided in W.S. 15-6-101 through 15-6-448, except the board may act by resolution whenever W.S. 15-6-101 through 15-6-448 specify action by ordinance.
W.S. 18-12-140