The Forbes Road, an historic military roadway in what was then British America, was initially completed in 1758 from Carlisle, Pennsylvania, to the French Fort Duquesne at the junction of the Allegheny and Monongahela rivers in what is now downtown Pittsburgh, via Fort Loudon, Fort Littleton, Fort Bedford and Fort Ligonier. The road, initially about 220 miles long, was named for Brigadier General John Forbes, the commander of the 1758 British-led expedition that built the road during the French and Indian War (also known as the Seven Year's War). The Forbes Road and Braddock's Road were the two main land routes that the British cut west through the wilderness during the war. The task was complicated by the Appalachian Mountains' steep northeast-to-southwest ridges, a generally broken terrain between the ridges, heavy forestation, and numerous swamps and rivers.