Road Development Authority
The RDA is the premier highway authority in the country and is responsible for the maintenance and development of the National Highway Network, comprising the Trunk (A Class) roads, Main (B Class) roads and Expressways and the planning, design and construction of new highways, bridges and expressways to augment the existing road network.
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Information on National Roads
General Procedure of Erecting Hoardings / Name Boards / Direction Boards on National Highways
   Our Services
   Speed Limits of National Highways
   Motor Traffic Act (Chapter 203)
  • Part I : Section (I) General Dimensions and gross vehicle weight)
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       - Sinhala
       - Tamil
RDA Head Office:
Road Development Authority
" Maganeguma Mahamedura"
No: 216, Denzil Kobbekaduwa Mawatha,
Koswatta, Battaramulla
Telephone: +94 11 2 046200

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Notice Board
Access road to the Kelani Bridge from Kandy Road will be closed for vehicles exceeding 3.5m height from 25th January 2020 for the construction of the proposed new Kelani Bridge. In purpose of regulating height restriction, a protective gantry will construct at that location.
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