I think you just need to go west to 5th Gym.

i tried but when i reach the end of the route west of the town two men are blocking the way

Weird, I was able to go west after beat the 4th gym and saw an event with N.

there must have been something you did i went east after the 4th gym leader and there was an event where i ended up battling a few ppl then i couldn't get across the bridge on that route bcuz it's somehow blocked off so i went west and there are two guys there blocking the entrance to a cave of some sort

Hmm, I battled all people on the map near the bridge and after that I talked to the professor near the bridge. After that, a scene where the bridge lowered appear.

ok i just got HM04 i'll try what you did and see what happens i'm playing it via desmume btw

that didn't work i still can't get past the bridge and i'm still stuck plz can someone help me get i can't get to this darn 5th gym leader

/// THE UNIVERSAL CHILD'S PLAY PATCH WAS UPDATED!! ///

How to play "Pocket Monster : White" on your R4 and DSTT

For General Users:

1. Download Patch.rar and get a Patch.exe file from the RAR archive.

2. Drag your ROM and drop it onto the Patch.exe.

For DSTT Users:

1. Copy the included three files, TTMENU.DST, infolib.dat and extinfo.dat, to the TTMENU folder of your DSTT.
    You don't need to patch your ROM file.
    You can't use software reset.
  
Note: You can use the latest kernel DSTT Kernel v1.17a12 rev31 for implemeting the latest files.  


Note:
This path is not only for "Pocket Monster : White". It's one of game to be patched by Universal Child's Play Patch.  
The file having the ".bak" extension is the backup copy of the original nds file.



Credit to Rudolph.   

This post has been edited by KimYom, Tue, September 21st, 2010 at 10:50

really? i just battled the old dude and then went over and saw my rival and then the bridge lowered.

/// THE UNIVERSAL CHILD'S PLAY PATCH WAS UPDATED!! ///

How to play "Pocket Monster : White" on your R4 and DSTT

For General Users:

1. Download Patch.rar and get a Patch.exe file from the RAR archive.

2. Drag your ROM and drop it onto the Patch.exe.

For DSTT Users:

1. Copy the included three files, TTMENU.DST, infolib.dat and extinfo.dat, to the TTMENU folder of your DSTT.
    You don't need to patch your ROM file.
  
Note: You can use the latest kernel DSTT Kernel v1.17a12 rev32 for implemeting the latest files.  


Note:
This path is not only for "Pocket Monster : White". It's one of game to be patched by Universal Child's Play Patch.  
The file having the ".bak" extension is the backup copy of the original nds file.



Credit to Rudolph.