Grishk is located on the important transport route known as Highway 1, which was built during the time of the Soviet–Afghan War. This route links Farah Province in the west and to Kandahar Province in the east. As part of Operation Moshtarak the British Army and Afghan workers are constructing Route Trident, a road that will eventually connect Grishk with the provincial capital of Lashkar Gah. Grishk is also the southern terminus of Route 611. The area is irrigated by the Helmand and Arghandab Valley Authority.