City Hall promises to seek public input before it raises the height of existing roads or builds new ones exceeding 30 centimetres, says deputy Bangkok governor Chakkraphan Phewngam.
Consultation is needed as raised roads will directly impact residents where the work takes place, he said.
If existing roads through sois are to be improved, their height will be capped at 30cm. Should the height be raised because of improvements, City Hall will first hold talks with homeowners to gauge their views, the deputy governor said Wednesday while discussing plans for road development projects.
He said if the roads are higher than 30cm, rainwater flowing down them could flood nearby homes. This is especially risky during the rainy season when downpours occur often, causing flooding, said Mr Chakkaphan.
That is not a picture the city wants to see, he said, adding that roads built at a greater elevation than the houses around them have been a source of complaints in the past.
City Hall has been surveying roads in need of repair, said Mr Chakkaphan. For roads whose condition has deteriorated 70% since construction, the authorities will allocate funding for repairs.
Private roads in housing estates will also receive repairs if needed, on the condition that they are opened for public use, he said.
Under its ordinance, City Hall can allocate funds for road development in these areas if they meet the criteria.
Roads that need maintenance and repair are mostly in outer Bangkok.
