the Merrimack River into New Hampshire. Route 6 passed through New Hampshire's three largest cities, Nashua, Manchester, and the state capital of Concord. The highway ran concurrently with Route 28 between Manchester and Suncook, and the highway intersected Route 9 in Concord. At Franklin, Route 6 met the eastern end of Route 14 and joined with Route 11 to leave the Merrimack valley and pass through the heart of the Lakes Region. The two routes diverged north of Laconia, and as Route 6 returned to the Pemigewasset River valley, it ran concurrently with Route 25 from Meredith to Plymouth. Route 6A provided a more direct alternate route from Franklin to Plymouth via Bristol. Route 6 continued through the White Mountains, which the route summitted at Franconia Notch. The highway intersected Route 18 at Twin Mountain and Route 15 at Lancaster, then reached its end at a joint terminus with Route 26 in Colebrook. Route 6 followed the general course of what is now U.S. Route 6 from Orleans to Sagamore and Massachusetts Route 3 from Sagamore to Boston. The highway was replaced by U.S. Route 3 from Boston to its northern terminus. Route 6A in Massachusetts is now Massachusetts Route 3A, and Route 6A in New Hampshire is now New Hampshire Route 3A. Route 7 Route 7, or the Mohawk Trail, began at the New York state line in Hancock, Massachusetts. The highway started heading north from the state line and turned east in Williamstown, through which the highway joined Route 4. Route 7 intersected Route 8 in North Adams and crossed the Berkshire Hills. The highway emerged into the Pioneer Valley at Greenfield, where the highway intersected Route 2 and Route 10 and crossed the Connecticut River at the site of the General Pierce Bridge. East of the Connecticut River valley, Route 7 ran concurrently with Route 32 between Athol and Baldwinville and intersected Route 12 in Fitchburg. The highway continued southeast through Concord and Lexington and joined Route 6 entering Boston, where the highways had connections with Route 1 and Route 28. Route 7 was superseded by Massachusetts Route 2 for almost all of its length. However, the highway followed Massachusetts Route 43 from its western terminus to Williamstown and ran south of the current route of Massachusetts Route 2 from Greenfield to Millers Falls. Route 8 Route 8, or the Stratford, Waterbury, and North Adams Route, began