ME 108 as originally designated in 1925 ran between Livermore at ME 107
(now ME 4) and Dixfield at NEI 15 (now US 2), part of the incarnation of
former lettered highway O; by 1929
it reached all the way to Rumford along new routing,
where it terminated also at NEI 15 (US 2).
It seems that the original terminus of ME 108, and thus the routing of
lettered highway O, was at US 2 in Dixfield where it crossed the river.
This routing was dropped in the 1929 extension.
Surviving the Maine Great
Renumbering, ME 108 was additionally extended up ME 4 briefly to turn back
south again on a new alignment along Boothby Rd. This extended alignment,
added 1946-7,
then terminated at ME 219 near Turner where it still does today. With US 2,
both routes cover both shores of the Androscoggin in their respective regions.
Between 1953-4, ME 108 was relocated in Rumford along a southerly bypass
routing (opened 1954)
on Bridge St, which it still uses today to intersect US 2 at
Franklin St. The old alignment is not exactly clear, but it was probably along
Hartford and Portland Sts to intersect US 2 at the traffic circle along
Rumford Ave.