HeartGold & SoulSilver Route 24
Cross Nugget Bridge above Cerulean toward Bill's house on Route 25. The Gen I trainer gauntlet is gone in Johto-era Kanto; the only battle is a lone Team Rocket Grunt at the far bank, fielding a single Golbat.
Route 24 is in Kanto, with Route 25 to the east. In the story you arrive from Cerulean City to the south and it comes before Battle Frontier.
ROUTE 24 MAP
Pokemon Encounters
Venomoth flutters through the grass at 5 percent, an unusual sight as a fully evolved Bug type in the wild, while Bellsprout and Abra share the route up Nugget Bridge and the rods pull Goldeen from the stream below.
Goldeen
Also found in 14 other locations
TRAINERS
1 trainer battle at Route 24. Team rosters, levels, and weakness coverage for each.


