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the State’s 1,060-mile share of the system. Originally, 1972 was the scheduled completion yearfor the svstem nationally. It now appears however, that it will be at least 1975, and some authorities have said that it may be extended to 1977. Ninety per cent of interstate system costs are provided by federal taxes on highway users, channeled back to the states through federal highway trust funds. The remainr ing 10 per cent is provided by the states. In most states, including Virginia, this is alsp through highway user taxes. The federal portion has not been provided as rapidly as originally expected, and this has caused the delay. .
In Virgihia* the l'ar'gejstj single shaire of the estiniatea cost for the remainder of th£ system would be for eastwest Interstate 64, and amounts to $256,299,000. Next largest, $146,212,000, is earmarked for Interstate 77 in mountainous Southwest Virginia.
The Department estimated the cost of completing Interstate 66 at $85,185,000; Interstate 81 at $26,228,000; Inter state 85, $29,205,000, and Interstate 95, $98,166,000. The cost of building the Interstate 295 partial beltway of Richmond was estimated at $80,635,000, while further work on the Interstate 495 beltway of Washington was set at $6,442,000. Additional work on urban spurs of the interstate system was estimated to total $52,320. 000.
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