 Highway 58A | |||||||
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| Niagara Regional Road 525 | |||||||
 Highway 58A highlighted in red | |||||||
| 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 | ||||||
| Location | |||||||
| Country | Canada | ||||||
| Province | Ontario | ||||||
| Highway system | |||||||
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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.