RSA 235:17: Joint Fund Expenditures.

Fifty percent of the contribution of a city or town for state aid shall be remitted to the commissioner of transportation before any state aid project is begun, and the balance shall be remitted on completion of the project, and such contribution, together with the amount apportioned to it by the commissioner of transportation shall constitute a joint fund to be expended under the supervision of the commissioner for the construction or reconstruction of only such class I, II, or III highways within such city or town as the commissioner shall have designated.