American Highway Code US Route 25 History
. US 25 originally extends toward northward into Ohio as well as Michigan before Interstate 75 between Detroit and Cincinnati and Interstate 94 between Detroit as well as Port Huron, Michigan, made most of US 25 superfluous north of Cincinnati.
. In Michigan, M-25 continues as the designation of old US 25 among Port Austin and Port Huron. Some of the old maps disagree with this whether the east-west segment of what is now M-25 between Bay City was US 25 or M-25; for that discussion take a look at M-25.
. Relics of US 25 between Brownstown Township, Michigan, (a suburb of Detroit) as well as Cygnet, Ohio, take account of US 24, M-125, and State Route 25.
. US 25 here Michigan and Ohio were historically notorious as Dixie Highway, and the road is still so named in some other places. This road may also be known as "County Road 25-A" through a little parts of Ohio.
. When the Cumberland Gap Tunnel was opened to traffic in 1996, from Middlesboro, Kentucky, US 25E climbed the Cumberland Mountains and the historic Wilderness Road which passes through the Cumberland Gap into Virginia then heading south to enter Tennessee.
. The older US 25 north of the intersection of US 11W in Tennessee which crosses the Clinch Mountain, next to a notorious route which consist of significant elevation gain as well as many other switchbacks, some of them are full "hairpin" turns.
