create the county and township infrastructure fund for the accounting, safekeeping, and allocation of unobligated rural access infrastructure fund moneys.

SB 236 creates a new "county and township infrastructure fund" in South Dakota's state treasury to manage unspent money from existing rural access infrastructure funds. It requires counties to transfer any unobligated funds (money not committed to specific projects) by June 30, 2029, to this state fund instead of letting them revert to the general budget. The fund will hold these unspent moneys for future allocation to counties, following existing rules for rural road projects, and will be administered by the Department of Revenue. This bill does not change how funds are spent but provides a formal mechanism for accounting, safekeeping, and future distribution of leftover funds.