The electors of each township have power at the annual meeting to vote to raise such sums of money for the repair and construction of roads and bridges, and for all township charges and necessary expenses as they deem expedient, within the limitations prescribed in section 57-15-20, and on the fourth Tuesday in March, or within ten days thereafter, of each year, the    board of supervisors of each civil township shall levy annual taxes for the ensuing year, as voted at the annual township meeting, and the tax levy must be limited by the amount voted to be raised at such annual meeting. The electors at such annual meeting may direct the expenditure of the road tax, or a part of it, in an adjoining township under the joint direction of the boards of supervisors of the townships interested and furnishing such funds.