Route 355 is a national highway of Japan connecting Katori, Chiba and Kasama, Ibaraki in Japan, with a total length of 73.8 km (45.86 mi). "一般国道の路線別、都道府県別道路現況"...

National Route 6 (国道6号, Kokudō Roku-gō) is a Japanese highway from Tokyo to Sendai that goes through the cities Mito, Iwaki and Sōma. It traces the old...

National Route 4 (国道4号, Kokudō Yongō) is a major national highway in eastern Honshū, Japan. Measuring 738.5 kilometers long (458.9 mi), it is the longest...

Archived from the original on 2014-10-06. Retrieved 30 September 2014. "国道109新线饮马鞍隧道开挖进尺突破4000米！". j.021east.com. Retrieved 2022-05-22. "景文3标项目叶麻尖1#隧道顺利进洞施工"...

"新突破！城开高速控制性工程吴家梁隧道掘进4000米大关_高速公路". www.sohu.com. Retrieved 2020-10-11. "国道109新线高速公路饮马鞍特长隧道贯通_北京市_交通_门头沟区". www.sohu.com. Retrieved 2024-06-25. "景文3标项目叶麻尖1#隧道顺利进洞施工"...

National Route 112 (国道112号, Kokudō Hyaku jūnigō) is a national highway of Japan that traverses the prefecture of Yamagata in a southeast–northwest routing...

Hokota, Ibaraki in Japan, with a total length of 172.8 km (107.37 mi). "一般国道の路線別、都道府県別道路現況" [Road statistics by General National Highway route and prefecture]...

and Abiko, Chiba in Japan, with a total length of 91.7 km (56.98 mi). "一般国道の路線別、都道府県別道路現況" [Road statistics by General National Highway route and prefecture]...