 At the western end of the tunnel , Highway 58 emerges as a divided highway in Thorold . It meets an interchange with Pine Street ; the eastbound on @-@ ramp from Pine Street features a stop sign and no merging lane prior to entering the Thorold Tunnel . West of Pine Street , the route passes beneath a Trillium Railway line and curves slightly southwest . It encounters an interchange with Collier Street , gradually curving to the northwest and passing beneath Richmond Street . Highway 58 ends at a complicated interchange with both St. Davids Road as well as Highway 406 on the edge of the Niagara Escarpment . 
