Bureau of Public Roads

“ Table C lists the estimates of cost by States for all work not financed as of July 1, 1956, which was required to complete the Interstate System. These costs are shown in three categories: (1) Preliminary engineering, (2) right-of-way, and (3) construction. The summation of the cost of these three elements of work less the total amounts shown in table B represent the remaining cost to complete the Interstate System. The ratio of this cost in each State to the sum of the costs in all the States determines the factors for apportionment of funds for the fiscal years 1960, 1961, and 1962. ”

“ Making an estimate of this magnitude is a complex engineering job and requires exercise of sound judgment in forecasting probable highway needs of each State in the calendar year 1975. The basic elements of the job have been done in the individual State highway departments where there is available the largest collection of needed basic data, skills, and experience bearing on the highway problems of each State. ”

“ This is the first estimate of a series of five and is made in the early stage of the highway program launched by the 1956 act. As construction of the Interstate System progresses toward completion and as the amount of remaining work correspondingly decreases, future estimates of cost will be made on a broader base of experience and these estimates will progressively become more accurate by reflecting actual trends in cost, either upward or downward, that cannot be forecast as well now. ”