Townline Tunnel
| The tunnel seen from the west | |
| Overview | |
|---|---|
| Official name | Townline Tunnel | 
| Location | Welland Canal, Welland, Ontario | 
| Coordinates | 42°57′38″N 79°13′45″W / 42.960537°N 79.229107°W | 
| System | Canadian Pacific Railway | 
| Route | Highway 58A | 
| Operation | |
| Opened | July 13, 1972 for cars January 31, 1973 for trains | 
| Operator | Ministry of Transportation | 
| Technical | |
| Length | 330 m | 
| No. of tracks | Double (only 1 used) | 
| No. of lanes | 2 lanes of traffic | 
| Width | 35 m | 
The Townline Tunnel is an underwater tunnel in Welland, Ontario, Canada carrying Highway 58A as well as the Canadian Pacific Railway under the Welland Canal.