This Sassanide bridge has been constructed in the confluence of the Seimareh and Kashkan Rivers. Although it has been repaired several times during the past, it is almost in a ruined state now.

This narrow and high valley is one of the most important and strategic points of the region, located in the western side of the Dareh Shahr - Pol-e-Dokhtar Road.

Covering an area of 20,133 square kilometers, Ilam province is located in the western Iran. According to the latest divisions of the country , the cities of the province are Ilam, Mehran, Dehloran, Dareh Shahr, Shirvan Va Chardavol, Aivan and Abdanan. Ilam is the capital city of the province.