VT 129 then heads north, intersecting with Shrine Road (Town Highway 2) before leaving Isle La Motte over a bridge for Alburgh.

The highway turns eastward, intersecting with local roads and passing to the south of Alburg Golf Links.

VT 129 then heads to the south, paralleling the shores of the La Motte Passage (a part of Lake Champlain).

At a curve to the east, VT 129 intersects with a short extension of a nearby highway, which terminates quickly.

Many of the F-x series routes along the shores of Lake Champlain were changed to new designations in the 1940s, 1950s, and 1960s.