Ontario Highway 539A
|Maintained by the Ministry of Transportation of Ontario|
|Length||5.8 km (3.6 mi)|
|Southeast end||Highway 539 in River Valley|
|Northwest end||Highway 805 at the Sudbury–Nipissing boundary|
|Towns||West Nipissing, River Valley|
Secondary Highway 539A, commonly referred to as Highway 539A, is a provincially maintained secondary highway in the Canadian province of Ontario, located within Nipissing District. Commencing at a junction with Highway 539 in the community of River Valley, the highway extends northwesterly for 13.1 kilometres (8.1 mi) to a point near where the Sturgeon River crosses the boundary between Nipissing and Sudbury District. At this point, the roadway turns northward and continues as Highway 805.
Highway 539A begins at a junction with its parent route, Highway 539. Drivers on Highway 539 must turn to remain on that route, while southbound Highway 539A becomes eastbound Highway 539 to Field. Northbound, drivers round a long curve and enter the community of River Valley. The highway crosses the railbed of a former rail spur, exits the community and crosses the Temagami River. The highway gradually curves to the northwest and hugs the bank of the Sturgeon River to the border between Nipissing District and Sudbury District, where it ends at Highway 805.
Although Highway 539 was designated in 1956, and the road that is now Highway 539A existed, the route was not designated at that time. The route first appears on the 1958 Official Road Map of Ontario as a short spur of Highway 539 into River Valley. In 1962, Highway 805 was designated within Sudbury District. In order to connect it with the rest of the provincial highway network, Highway 539A was extended northwest to the Nipissing – Sudbury district boundary. It still follows this same routing today.
|River Valley||0.0||0.0||Highway 539|
|West Nipissing||5.8||3.6||Highway 805||Sudbury–Nipissing boundary|
|1.000 mi = 1.609 km; 1.000 km = 0.621 mi|
- Ontario Road Map (Map). Cartography by C.P. Robins. Ontario Department of Highways. 1957. § M32.
- Ministry of Transportation of Ontario (2010). "Annual Average Daily Traffic (AADT) counts". Retrieved January 10, 2014.
- Ontario Back Road Atlas (Map). Cartography by MapArt. Peter Heiler. 2010. p. 105. § K17. ISBN 978-1-55198-226-7.
- Ontario Road Map (Map). Cartography by C.P. Robins. Ontario Department of Highways. 1956. § M–N32.
- "Ontario Secondary Roads Now Designated 500, 600". 112 (33, 119). The Globe and Mail. February 4, 1956. p. 4.
Two new Ontario road numbers appear on the province's 1956 official road map which will be ready for distribution next week. The new numbers are the 500 and 600 series and designate hundreds of miles of secondary roads which are wholly maintained by the Highways Department. More than 100 secondary roads will have their own numbers and signs this year. All of these secondary roads were taken into the province's main highways system because they form important connecting links with the King's Highways
- Ontario Road Map (Map). Cartography by C.P. Robins. Ontario Department of Highways. 1958. § M32.
- Ontario Road Map (Map). Cartography by C.P. Robins. Ontario Department of Highways. 1962. § M32.
- Ontario Road Map (Map). Cartography by C.P. Robins. Ontario Department of Highways. 1963. § M32.