Does anybody have any experience or photos or videos of the tunnel during heavy rain?  Does it flood?  If not, where do they pump the water to? 

It would take several meters of flooding at the lower parts of Sukhumvit before this tunnel could flood. It only catches the direct rain at the entrances. For this there's pumps at Pattaya Klang intersection.

3 minutes ago, chakatee said:

It would take several meters of flooding at the lower parts of Sukhumvit before this tunnel could flood. It only catches the direct rain at the entrances. For this there's pumps at Pattaya Klang intersection.

And of course you will see flooding particularly to the north of the underpass when we get heavy rain. 

Not seen  flood water there , i think its because they  sweep the road  through the tunnel   that keeps the drain covers clear ... no garbage covering the drains  no floods

If I recall correctly, years back when the tunnel was new they had flooding/pump problems but since then they replaced the pumps and I don't remember hearing of flooding recently.

1 hour ago, bbko said:

If I recall correctly, years back when the tunnel was new they had flooding/pump problems but since then they replaced the pumps and I don't remember hearing of flooding recently.

Never known the tunnel itself to flood since it was opened.

 

On 7/15/2021 at 8:20 AM, jacko45k said:

And of course you will see flooding particularly to the north of the underpass when we get heavy rain. 

This is where the problem is - not long ago the traffic going south into the tunnel and upto the Klang intersection was at a crawl as the 4 lanes basically became 1 with deep water to the inside and abandoned cars.

Traffic coming north out of the tunnel was slow to get through the flooding just after the tunnel exit.

26 minutes ago, topt said:

Never known the tunnel itself to flood since it was opened.

Correct, I was thinking back to the construction days when the pumps weren't install yet and it flooded back in 2015.

 

Shock; they got it right, no flooding.  Who predicted that!  ????

It might be an underpass but it is higher than most surrounding roads ie from the north you drive up a slope travelling south so v unlikely to flood

The only time it flooded was when it was being built

 

as its on top if a slight hill it would be almost impossible to flood now that both ends are open.

At least they got it right this time. Don’t knock them down when they finally get something right, otherwise we may never see it again. Let’s just look at beach road flooding or the sand fiasco. Give praise when it’s due.