Ontario Highway 638

Highway 638
Route information
Maintained by Ministry of Transportation of Ontario
Length	51.0 km[1] (31.7 mi)
Existed	March 29, 1962[2]–present
Major junctions
Northwest end	Highway 17B in Echo Bay
Major intersections	Highway 17 / TCH in Echo Bay  Highway 670 at Ophir
Southeast end	Bruce Mines north limits
Location
Country	Canada
Province	Ontario
Towns	Echo Bay, Bruce Mines
Villages	Sylvan Valley, Leeburn, Ophir, Rydal Bank, Bruce Station
Highway system
Ontario provincial highways Current Former 400-series
← Highway 637 → Highway 639

Secondary Highway 638, commonly referred to as Highway 638, is a provincially maintained secondary highway located in the District of Algoma in the Canadian province of Ontario. The route begins at Highway 17B in Echo Bay and travels eastward to Ophir, where it turns south to Bruce Mines, ending 1.1 km (0.7 mi) north of Highway 17. The north–south portion of the route was designated in 1956 as Highway 561. In 1962, Highway 638 was designated from Echo Bay to Highway 561, as well as a segment of the latter route from Ophir to Dunns Valley. The highway took on its current routing in 1989, assuming the route of Highway 561 south from Ophir to Bruce Mines; the section of Highway 638 from Ophir to Dunns Valley was renumbered as Highway 670.