<P> Coordinates: 35 ° 36 ′ N 74 ° 39 ′ E ﻿ / ﻿ 35.600 ° N 74.650 ° E ﻿ / 35.600; 74.650 </P> <Table> <Tr> <Th_colspan="2"> <P> </P> National Highway N--35 </Th> </Tr> <Tr> <Td_colspan="2"> Karakoram Highway شاہراہ قراقرم ‎ </Td> </Tr> <Tr> <Th_colspan="2"> Route information </Th> </Tr> <Tr> <Td_colspan="2"> Part of Asian Highway 4 </Td> </Tr> <Tr> <Td_colspan="2"> Maintained by National Highway Authority (Pakistan) and Transport Department of Xinjiang Uyghur Autonomous Region (China) </Td> </Tr> <Tr> <Th> Length: </Th> <Td> 1,300 km (800 mi) Pakistan: 887 km (551 mi) China: 413 km (257 mi) </Td> </Tr> <Tr> <Th> Existed: </Th> <Td> 1966--present </Td> </Tr> <Tr> <Th> History: </Th> <Td> Completed in 1979, open to the public since 1986 </Td> </Tr> <Tr> <Th_colspan="2"> Major junctions </Th> </Tr> <Tr> <Th> North end: </Th> <Td> Kashgar, Xinjiang, China China National Highway 314 (Khunjerab Pass--Kashgar--Ürümqi) Khunjerab Pass </Td> </Tr> <Tr> <Th> </Th> <Td> N - 35 N - 15 </Td> </Tr> <Tr> <Th> South end: </Th> <Td> Hasan Abdal, Punjab, Pakistan </Td> </Tr> <Tr> <Th_colspan="2"> Location </Th> </Tr> <Tr> <Th> Major cities: </Th> <Td> Haripur, Abbottabad, Mansehra, Battagram, Besham, Pattan, Dasu, Chilas, Gilgit, Aliabad, Gulmit, Sust, Tashkurgan, Upal, Kashgar </Td> </Tr> <Tr> <Th_colspan="2"> </Th> </Tr> <Tr> <Th_colspan="2"> Highway system </Th> </Tr> <Tr> <Td_colspan="2"> Roads in Pakistan </Td> </Tr> </Table> <Tr> <Th_colspan="2"> <P> </P> National Highway N--35 </Th> </Tr> <Tr> <Td_colspan="2"> Karakoram Highway شاہراہ قراقرم ‎ </Td> </Tr>

Why is there a single road from islamabad to khunjerab