Ontario Highway 58A

Highway 58A shield

Highway 58A
Niagara Regional Road 525
Route information
Maintained by the Ministry of Transportation of Ontario
Length: 5.1 km[1] (3.2 mi)
Existed: 1978 – present
Major junctions
West end:  Highway 58
East end:  Highway 140
Highway system
<td width="100%" align=center" colspan="3" style="padding:0;vertical-align:middle;text-align:center">Current highways
←  Highway 49 Highway 60  →
Former highways
←  Highway 57 Highway 59  →

King's Highway 58A, commonly referred to as Highway 58A, is a provincially maintained highway in the Canadian province of Ontario. The short route serves to connect Highway 58 with Highway 140 and passes beneath the Welland Canal through the Townline Tunnel. The entire route is located within the city of Welland in the Regional Municipality of Niagara.

The route was established by 1978, following completion of the Welland By-Pass project, and has remained unchanged since then.

Route description

Highway 58A passes through the Townline Tunnel, one of the three tunnels under the Welland Canal. The majority of the route follows Townline Road, although a short section at the eastern end travels along Reaker Road and Netherby Road. Beginning at the northern terminus of the southern section of Highway 58, the highway travels east, parallel with two railway lines. The road intersects Canal Bank Road (north) / The Kingsway (south) after crossing an earth plug on the old Welland Canal, now the Welland Recreational Waterway. It then curves slightly southwards and begins descending towards the Townline Tunnel. It encounters Humberstone Road and then passes beneath a railway prior to entering the tunnel. At the eastern end of the tunnel, the route encounters Rusholme Road Road before passing beneath Highway 140. It turns north onto Reaker ROad Road and then west onto Netherby Road to end at an at-grade intersection with Highway 140.[2][3]

History

Highway 58A was established during the 1970s following completion of the Welland By-Pass project of the Welland Canal and Highway 140. Initially envisioned as the southern terminus for Highway 406, the planned route first appeared on the Official Ontario Road Map in 1971.[4] However, it did not appear the following year.[5] The Townline Tunnel was opened to automobile traffic on July 13, 1972. Despite this, the Highway 58 designation did not appear on an official road map until 1978.[6] The route has remained unchanged since then.[2]

Future

Route planning documents show two proposals that may utilize the Highway 58A corridor: a southern extension of Highway 406 and the eastern portion of the Mid-Peninsula Highway, referred to as the Niagara South Highway in planning documents. Neither proposal has garnered approval or undergone environmental assessment at this time.

Major intersections

The following table lists the major junctions along Highway 58A, as noted by the Ministry of Transportation of Ontario.[1] The entire route is located in the Regional Municipality of Niagara.[2] 

Locationkm[1]miDestinationsNotes
Welland0.00.0 Highway 58 south (West Side Road) – Port Colborne
0.80.5Welland Street
Townline Tunnel under the Welland Canal
4.72.9Moores RoadHighway 58A turns north
5.13.2 Highway 140 to Highway 406 – St. Catharines
1.000 mi = 1.609 km; 1.000 km = 0.621 mi

References

  1. ↑ 1.0 1.1 1.2 Ministry of Transportation of Ontario (2010). "Annual Average Daily Traffic (AADT) counts". Retrieved January 15, 2014.
  2. ↑ 2.0 2.1 2.2 Ontario Back Road Atlas (Map). Cartography by MapArt. Peter Heiler. 2010. p. 19. § T33–34. ISBN 978-1-55198-226-7.
  3. ↑ Google (February 18, 2015). "Highway 58A route" (Map). Google Maps. Google.
  4. ↑ Ontario Road Map (Map). Cartography by Photogrammetry Office. Department of Transportation and Communications. 1971. § N23.
  5. ↑ Ontario Road Map (Map). Cartography by Photogrammetry Office. Department of Transportation and Communications. 1972. § N23.
  6. ↑ Ontario Road Map (Map). Cartography by Cartography Section. Ministry of Transportation and Communications. 1978/79. South-Central Ontario inset. Check date values in: |date= (help)