Washington Revised Code Title 47. Public Highways and Transportation § 47.60.080. Determining amount of bonds to be issued

In determining the amount of bonds required to be issued there may be included any expenses incurred by the department in connection with and incidental to the issuance and sale of bonds and for the preparation of surveys and estimates and making inspections and examinations, interest during the estimated construction period, and for six months thereafter, and a reasonable amount for working capital and prepaid insurance.