http://www.thejakartaglobe.com/home/collapse-of-road-blamed-on-erosion/396593

Collapse of Road Blamed on Erosion
Arientha Primanita & Zaky Pawas | September 17, 2010

 

Police and curious onlookers gathering near the collapsed section of Jalan RE 
Martadinata near Tanjung Priok port in North Jakarta on Thursday. Traffic at 
the site has been closed for safety reasons. (JG Photo/Safir Makki) 



Jakarta. Experts have criticized the government over a 103-meter span of road 
that collapsed suddenly near Jakarta's Tanjung Priok port early? on Thursday, 
disrupting traffic in and out of the port but causing no casualties. 

While the authorities have blamed erosion for the collapse, which saw a section 
of two entire lanes of Jalan RE Martadinata disappear underwater, an urban 
planner and city councilor believe weak monitoring contributed to the incident, 
which may cost the state up to Rp 6 billion ($666,000). 

Comr. Susatyo Purnomo Condro?, chief of detectives at the North Jakarta Police 
said the surface of the eight kilometer road had been undergoing repairs since 
April 1, but the contractor, Indra Prima, was yet to complete the project. 

He said the 20-year-old road, which falls under the responsibility of the 
central government, ran alongside a canal and was often flooded by tidal 
surges. 

Comr. Irvan Prawiraputra, chief of North Jakarta's traffic unit, said police 
had initially closed all lanes at the collapsed part of the road, but reopened 
the unaffected lanes for about an hour before closing it altogether again 
because of safety concerns. 

The deputy minister of public works, Hermanto Dardak?, told the Jakarta Globe 
that erosion was to blame and that natural water abrasion had weakened the 
road's foundations. 

He said the ministry would today start installing concrete piles to support the 
remaining portion of road where the collapse took place. He estimated the 
repair bill would be about Rp 6 billion. 

Djoko Murjanto?, director general of Bina Marga, which oversees roads at the 
ministry, said a study would be undertaken to find the most appropriate 
technology and measures to repair the damaged section and strengthen the entire 
length of the road.? 

"The road has been fine for more than 20 years, so we didn't really monitor the 
structure," he said, adding that the ongoing repairs had only been surface work 
to fix problems such as potholes. 

Meanwhile, Insp. Gen. Timur Pradopo?, chief of the Jakarta Police, said during 
a visit to the site that a joint team with the Public Works Ministry would 
investigate the cause of the collapse. 

Susatyo said the police had so far questioned four people - two project 
supervisors from the Public Works Ministry, an employee of Indra Prima and the 
motorcycle rider who discovered the collapse. 

He said police were focusing on the ongoing repairs as well as technical 
information about the road's construction.? Yayat Supriyatna?, an urban 
planning expert from Trisakti University, blamed weak monitoring for the 
incident. 

"RE Martadinata is a strategic road used by many people. Why did the government 
only repair the surface without checking the foundations as well?" he said. 

Yayat said that while the erosion had been natural, proper monitoring would 
have prevented the collapse.? 

Ellen Tangkudung?, from the Indonesian Transportation Society (MTI), said the 
heavy traffic that used the road, including of container trucks, should be 
considered in the planning. 

City councilor Muhammad Sanusi? urged the central government to repair the road 
immediately because it provided primary access to and from the port. 

He said the ministry should have known that North Jakarta was exposed to 
regular tidal floods and better monitored the road's foundations. 

Traffic to and from Tanjung Priok is being diverted to avoid the collapsed 
section of the road, with a detour available through Sunter and Jalan Baru 
Pengadilan.


[Non-text portions of this message have been removed]



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