Background
Local access roads form the last-mile layer of Cambodia’s transport infrastructure by linking villages, farms, worksites, and public facilities to national and provincial routes. National Road 4 is one of Cambodia’s principal corridors between Phnom Penh and Sihanoukville province, making feeder-road connections relevant to local mobility and freight access.
Double bituminous surface treatment, or DBST, is a road surfacing method that uses layers of bitumen and aggregate to seal the road surface and improve resistance to weather and traffic wear. Road infrastructure records are more useful for long-term reference when they identify the route, length, surfacing method, funding source, and expected completion schedule.
The Senate of Cambodia reported the inspection as an infrastructure-related field activity by Mong Reththy, President of the Senate’s Third Commission and Chair of the Senate members’ group for Region 7. The reported activity concerns a public-use road construction project rather than a regulatory instrument.
Key Developments
On 30 April 2026 at 7:00 a.m., Mong Reththy led a working group and heavy truck drivers to inspect machinery and construction activity for a two-layer DBST road project using M19-M12 materials.
The road is reported to connect National Road 4 at kilometer 157-158 in Monorom village, Tanei commune, Prey Nob district, Sihanoukville province, to Phnom Ta Keung. The reported road length is 1,971 meters.
The Senate post states that the project is financed from Mong Reththy’s personal funds at a cost of USD 177,390. Completion is planned for the end of May 2026.
Institutional Role
The post identifies Mong Reththy as both President of the Senate’s Third Commission and Chair of the Senate members’ group for Region 7. The activity was presented as an on-site review of road construction progress and coordination with users of heavy vehicles.
The source also states that 25 heavy truck drivers were advised to recognize the difficulty of road construction and the effort involved in raising funds for a public-use road. The post does not describe the issuance of a law, sub-decree, prakas, directive, or formal administrative rule.
Operational Implications
The project adds a paved access link from National Road 4 to Phnom Ta Keung in Prey Nob district. Once completed, the road would provide a surfaced local connection for users in the identified area.
The reported use of DBST surfacing is operationally relevant because road surface type affects construction method, maintenance needs, and performance under regular vehicle use. The source specifically highlights heavy truck drivers as frequent users of the road.
