Brief Introduction of Yonglan Expressway Project

The project adopts the standard of two-way four-lane expressway, and the main line adopts asphalt concrete pavement. There are 8 interchanges on the whole line; 90 bridges, including extra large bridge 1 seat, 44 large bridges, 44 medium bridges, small bridges 1 seat, and 7 tunnels1seat (including the Hunan section of Jiuyishan Tunnel crossing the border between Hunan and Guangdong), including 3 extra-long tunnels, 2 long tunnels, 8 medium tunnels and 4 short tunnels; 275 culverts, 239 passages, 28 separated interchanges and 24 overpasses; There are 3 service areas, 2 parking areas, 3 tunnel management stations, 6 ramp toll stations and 1 main toll station. There are 1 monitoring, communication and charge management sub-centers (Ningyuan), 2 maintenance work areas (Ningyuan and Lanshan) and 3 tunnel management stations (Yangmingshan, Guanyinling and Jiuyishan).