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Underpasses under construction underwhelm Phuket's commuters

Seepage Stalls Phuket Underpass

Monday, November 30, 2015
PHUKET: The contractor for a Phuket City underpass that has missed completion deadlines will be fined two million baht a day if the holiday island slips deeper into a traffic snarl abyss.

Three years of agony lie ahead for commuting motorists on Phuket, Governor Jamleran Tipayapongtada told honorary consuls at a meeting last week. And if the 23.5 billion tram project is approved, the holdups and diversions will go on and on, slowly.

With one underpass complete, two more in progress and two more yet to begin, Phuket is just beginning to deal with the price of its popularity after years of neglect. Vehicular traffic has grown rapidly.

Beset by delays, the Samkong Underpass has become the project that motorists most love to hate - and it's still only 56 percent complete, officials have told Phuketwan.

The renewed contract - the original deadline for completion passed months ago - is now up on December 21.

Alarmingly, Phuketwan has been told that with the two ends of the tunnel still 100 metres apart, construction teams are dealing with a new issue - seeping water from what appears to be a natural source.

''Fines of two million baht a day will apply if the project is still going in February,'' said Highways department project manager, Chalermpol Wongkiattikun.

Although the bypass road t-junction underpass appears to be going well, with diversions coping, concerns are growing about the Chalong Circle dig, where residents along key parts of the route are still protesting.

One hundred power poles around the underpass zone have to be moved before the dig can even begin. The Chalong Circle project is due to commence from December 11.

Latest Transport Department figures for registrations on Phuket show prosperity is leading to more people buying their own vehicles - an inevitable outcome on an island with such inadequate public transport.

In 2010, there were 6528 saloon cars among 29,696 vehicles registered, rising to 8476 among 33,133 in 2011, then jumping alarmingly in 2012 to 14,479 cars among 38,578 registrations.

The total of cars registered in 2013 stayed high, at 14,144 from a total of 36,431.

That growth probably could not be sustained and the number of cars regitered in 2014 slipped to 9062 out of 29,600 vehicles.

Latest figures reveal Phuket has 11,364 buses, minivans and meter taxis. The green-plate taxis number 4490 while there are still only 373 meter cabs, acording to the figures.

While officials see the tram running from Phuket's north to Chalong Circle as the 23.5 billion baht answer to Phuket's traffic woes, anyone who looks at Thepkasattri Road then imagines two tram tracks running down the middle will challenge that idea.

Most overseas passengers arriving at Phuket International Airport still want to head for the west coast destinations of Patong, Kamala, Surin, Kata and Karon as fast as they possibly can.

The tram meanders east then south to Phuket City when the newly-arrived passengers want to go west.

Local residents addicted to motorcycles as the most effective means of door-to-door transport have also bought cars for family outings.

Authorities who support the tram project have yet to explain how tourists and residents will be enticed to abandon efficient, fast taxis and motorcycles for a more expensive and slower system that, in many cases, takes them in the wrong direction.

Meanwhile, underpass contractors on Phuket will continue trying to dig the holiday island out of its traffic snarls.

Comments

Comments have been disabled for this article.

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There it starts already, water seeping to by 'natural source'.
That is a very promising outlook for the Chalong underpass contruction.

About that tram line. Is a sky tram a good idea? ( save road space for road traffic)

Posted by Kurt on November 30, 2015 10:44

Editor Comment:

Unless the ''sky tram'' can be built without visible means of suspension, it will require more lane space than two lines built at road level.

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"will be fined two million baht a day".. Useless: at the point that the constructor knows can only lose the money will abandone the project.. Look around you in Phuket

Posted by dave on November 30, 2015 11:08

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If (I'm an optimist !) they dig chalong circle, residents (Thai or foreign) really have only 2 choices. 1, Stay in Rawai, perhaps to take a trip up the coast the Kata ? 2, If you have to go to Pk town to work / a school north of chalong, you've really got no choice other than to move house.

I could be wrong. We may see ...

(And with the missing Russian market leaving houses vacant, the landlords of chalong must be bricking it ! If not, they should be !)

Posted by James on November 30, 2015 11:43

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Is anyone surprised that the underpass is long overdue or that there is a natural water course there? Of course not - Samkong area is well known for a large lake opposite to Tesco. Seems very clear that a flyover would be better, it's not as if Samkong is an area of outstanding natural beauty anyway.

The tram idea - still total nonsense of course, but then no one listens to reason or good sense anymore.

All good reasons why people will continue to move away or not return.

Posted by Discover Thainess on November 30, 2015 12:56

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Amazing Thailand, They just finished fixing a whole in the road in the first Underpass can't wait for more.

Posted by mike on November 30, 2015 13:57

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I only hope the problems with the Samkong underpass will force authorities to cancel the Chalong underpass.

Chalong circle is notorious for flooding, the soil is soft and it's only 300m from the sea front.

If you think a nearby lake causes a lot of water seeping into the underpass, what do you think the sea will do ?

An underpass at that location is pure lunacy. An overpass is the only logical and sensible option. Unfortunately it's also a lot cheaper, meaning a lot less can be skimmed off the top which means it will have no chance of being implemented.

Posted by Herbert on November 30, 2015 14:23

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James

Taking option two but much further north, Bangkok bound

Posted by Michael on November 30, 2015 15:43

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For the life of me i can't get my head around this tram proposal. Why can't these people see this is going to be a complete waste of time & money. When will they realize what is really needed is a BTS system the same as in Bangkok. It would start in the south on Pichit down near Rawai pier.... up to the circle where it has an interchange... one going up via central and the other through Phuket town. Another interchange at the north end of the by-pass road and then continue up to the turn off to the airport. Have one dedicated line from there to / from the airport. Guys if you're going to do this do it right from day one and make it a project for the future transportation on the island... not some whacky tram system that's going to benefit nobody.

Posted by DG on November 30, 2015 16:37

Editor Comment:

Not enough room for a BTS system, DG. Unless you take away all the cars . . . Take a look next time you are in Bangkok. The BTS system is massive. Toy trains might work.

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I would have thought that the engineers, geologists and surveyers, would all be highly qualified to check out the soils, water courses and other impacting problems, before, the actual digging took place? Enviromental Impact Study?
OR does Phuket work to the beat of a different drummer, money before planning? Just asking?
Swim on motorists.
Horrors, a terrible thought came to me now, will the jet ski mafia take over the water in the tunnel and intersection too?

Posted by Robin on November 30, 2015 17:01

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Herbert,
Please explain what the sea water will do different from water from a lake?

Does one create a higher level in the water table than another?

If the soil has low bearing pressure does this not create problems with reactive loads imposed from piers/ columns.?

What is the problem with seepage? In structural application seepage is encouraged as it relieves hydrostatic pressure?

Isnt an underpass a structure where everything has already been skimmed of the top?

Posted by MoW on November 30, 2015 17:35

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Robin,
The usual process at planning stage would be drilling and core sampling in an organised grid to determine expected soil conditions. This provides information to those who design the underpass and those who tender. It will remove some uncertainty and minimise the unexpected.

It will not pick up all issues but excavating into soils below the water table is not difficult as long as it is considered and prepared for.

Posted by MoW on December 1, 2015 02:41

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I assume we all agree a tram is rediculous, welcome aboard Ed, but has any thought been given to where the "stations" will be located, tram tracks are one thing, stations even bigger.

Posted by Laurie Howells on December 1, 2015 04:31

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Locals are protesting about the Chalong circle underpass? How can we find out more about this. I would think everyone south of the circle would want to have more info about stopping this disaster.

Posted by peter rawai on December 1, 2015 08:02

Editor Comment:

Mostly at this stage the residents who are directly affected by construction.

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@ MoW

There's probably more water in the sea than in the lake.

The area also used to have mangroves, which useally means a rather muddy soil, unlike the Samkong area which is way inland.

I'm not an engineer and surely almost every obstacle can be overcome by technology but why should one deliberately take the most expensive and difficult route ?

A flyover would be much quicker and cheaper to build, not to mention quite unlikely to flood.

Flooding being a constant occurrence at Chalong circle this is highly relevant.

Posted by Herbert on December 1, 2015 09:50

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Herbert,
If the lake was emptied would it stay empty of fill with seawater filtered through subsurface soils?

Dealing with water during construction or construction below the water table is not that difficult. After all we can tunnel through saturated rock and soils under harbours.

Posted by MoW on December 1, 2015 13:46

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@ MoW

You are missing the point, by a mile.

Like I said, almost any obstacle can be overcome by proper engineering.

The point is and was, now pay attention please, why should you go for the most difficult and expensive solution when far cheaper and easier options are available.

Furthermore knowing the level of engineering expertise and sticking to building codes and standards in Thailand only further supports a less demanding solution.

I do not question your engineering knowledge and expertise but unfortunately you are not in charge of this project. Phuket authorities are.

That should bring chills down everyone's spine.

Posted by Herbert on December 1, 2015 15:44

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Herbert

"Furthermore knowing the level of engineering expertise and sticking to building codes and standards in Thailand only further supports a less demanding solution."

That is exactly what they are doing. They have selected the solution that requires far less expertise, requires far less design and less accuracy in construction.

It does have the issue of water during cnstruction but this is so minor in comparision to the experise and accuracy required for large, even simple supported structures which impose high point loads on highly reactive soils.

An underpass imposes minimal load, can be even less that the mass of soil removed and consideration to increase mass so as to avoid floating in saturated soils may be required.
It requires minimal if any foundations, imposes an evenly distributed load upon soils and is less likely to experience creep any very unlikely to to subject to catastrophic failure no matter what extreme evnt occurs.

Of course it should NH evr be one size fits all but as a simple engineering solution, it is superior in many aspects to a flyover or overpass.

As for costs between both options, I often read the commentary of a flyover being cheapest but this is far from being correct. What appears to be a simple solution is not always the cheapest option

Posted by mow on December 1, 2015 16:53

Editor Comment:

Your assertion doesn't make sense, MoW. Thailand's highway constructors have had plenty of experience (ie expertise) with overpasses but little with underpasses. I doubt anyone is going to support your contention an underpass '' requires far less design and less accuracy in construction.''

Underpasses were chosen for Phuket because they are less obtrusive. Travellers coming from Bangkok are less likely to think ''well this just looks like another big city to me.''

You are also wrong about cost. My understanding as a non-engineer is that an underpass is far more expensive, for obvious reasons. I mean, you cannot be serious. I think the debate has gone as far as it needs to go.

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Perhaps the many opponents of the Chalong underpass can take heart from the successful opposition to the absurd Naiharn film museum and arrange public protests. Is there someone who can show some leadership like the excellent village headman did in Naiharn?

Posted by benvenuto on December 2, 2015 10:02

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I have always heard of the Phuket Dragon. That is the Dragon who's back is the mountain ridge between Katu and Patong.
Now being a very big Dragon, I think the Tesco Lotus intersection should be re-named The Dragons Bladder, due to the constant flooding in that intersection.
The underpass will always fill with water, idiots.
Money and brains did not go hand in hand on this project?

Posted by Robin on December 6, 2015 16:19


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