Why are the new installed drains raised and not level with the road surface anybody?

They appear to be the same all along the road i am lost here

My partner and I noticed this, too.  Our only thought was that maybe there will be a final surfacing of the road that will bring the road surface up to the level of the drains but as it is now they seem to be a hazard to both cars and motorbikes.

Drainage only for rain level higher than 5 cm. Otherwise too much water in drainage? Water below 5 cm is draining in other areas.

 

Capacity issue of the chanel below I guess.

 

 

There was a news story about it a month+ ago, they reassured local Thais that the road will be surfaced so it's flat. What they failed to mention is many man holes are already flush with the concrete so they can't have it both ways

Dual purposes Road bumps; can park but not use as a traffic lane.

14 hours ago, tomyami said:

Why are the new installed drains raised and not level with the road surface anybody?

They appear to be the same all along the road i am lost here

They perhaps plan to put a layer of tarmac down when the drains are installed. 

This is common at least on the Darkside they will eventually get around to it sooner when there is an accident.  

They are also used as speed bumps for motorbikes????

2 minutes ago, thailand49 said:

This is common at least on the Darkside they will eventually get around to it sooner when there is an accident.  

They are also used as speed bumps for motorbikes????

Soi Watboon / Bun Kanchana springs to mind.....

Looks like they will do the same the other side

Water level will have to be 5cm before entering drain so road will hold some water

As an alternative speed ramp there is no warning and its a main road so doubly hazardous

it seem anything goes when it comes to road works lately

Where cars are parked over them it looks ok

It's to stop water from going down the hole and ruining the tissue paper pipes.

If anything they should be very slightly below road level

And why oh why have they started work on the other side when virtually no part of the original works (North side) has been finished. They have put the concrete down but for most of that side the pavements are in a terrible state.

They did this on Samui, eventually the will fill up with asphalt. 

Some off topic bickering posts removed