After the effective date of this amending act, the bridge and its approaches and connecting highways shall be maintained by the Department of Highways, free of tolls, for the use of the public. Any moneys advanced by the Commonwealth, the Federal Government or any agency thereof, or advanced or paid by any county, which have not heretofore been paid, shall be paid out of the Motor License Fund. As much of the moneys in the Motor License Fund as are necessary therefor are hereby appropriated to the Department of Highways for this purpose.