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|---|---|---|---|---|
| Quốc lộ 9 | ||||
| Route information | ||||
Part of  AH16 | ||||
| Length | 90 km (56 mi) | |||
| Major junctions | ||||
| West end | Lao Bao Border Gate at Laotian border | |||
 in Đông Hà in Tân Hợp | ||||
| East end | Cửa Việt Port | |||
| Location | ||||
| Country | Vietnam | |||
| Highway system | ||||
| ||||
National Route 9 (Vietnamese: Quốc lộ 9 (or abbrv. QL9) or Đường 9) runs across Vietnam roughly in line with the 17th Parallel. The route includes two segments. The segment called National Route 9A begins at Đông Hà and ends at Lao Bảo on the Vietnam-Laos border and is entirely within Quảng Trị Province. The 8 km-long segment called National Route 9B begins at Dong Ha and runs eastward to Cửa Việt Port.