On September 5th, 2022, an earthquake with magnitude 6.8 happened in Luding, Sichuan Province, which caused severe geological disasters and brought heavy workload for rescue. It was urgent to find out the damaged roads in the disaster-hit area and assess the difficulty of rescue work. Therefore, Sichuan Communications Survey, Design and Research Institute Co., Ltd. arranged a professional team to investigate the damage situation in the disaster-hit region and shoulder the responsibility of reopening the road. Multiple damaged roads were investigated and 507 damaged points were found. Characterized by large number, small scale, and continuous distribution, landslides and collapse accounted for more thon 90% of the total damage. They were mainly distributed in the reservoir area of Dagangshan Hydropower Station, that is, along the roads on both banks of Dadu River, Caoke Township, and Detuo Township in the reservoir area of Dagangshan Hydropower Station. The seismic hazard of highway mainly lied in roadbed, 66% of which suffered from moderate damage, so it was difficult to recover the roadbed, but it had less impact on bridges and tunnels. Based on the analysis of earthquake distribution, landform and geology, it was clear that earthquake disasters on highway were mainly distributed in some areas like intensity above VIII, faults less than 5km away, slope of 30 degree to 70 degree, rivers less than 100m away and some granite areas, which showed positive relation to the earthquake intensity, and negative relation to the fault distance and river distance. Under the combination of adverse impact, the degree of disasters on high way significantly increased. In some regions, even 92.5% roads were damaged. During the road reopening and recovery, a strategy of using the water transport resources in the reservoir area of Longtoushi and Dagangshan Hydropower Station to quickly establish seven wharves and a green pathway to the epicenter was proposed. The reconstruction of the transportation network made full use of the water way instead of focusing on the road grade and indicator, aiming to improve the road resistance to natural disasters.