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Lesson
The dispersed location of project sites could make implementation management and supervision difficult. The sites of this project were spread in the north, east, and southwest of Chongqing, mostly in mountainous terrain, making management and supervision difficult for both the project management office and ADB.

Project Number: 45509-002
Project Name: Chongqing Urban-Rural Infrastructure Development Demonstration II Project
Report Date:
Lesson
Inadequate consideration of the project sites' topography and geological conditions in project feasibility studies and detailed engineering designs could lead to unexpected cost increases during implementation. There was a significant cost increase in land acquisition and resettlement due to changes in the project scope and additional land acquisition that needed to be undertaken because of the complex geological conditions in some sites resulting in increased civil works costs in some packages.

Project Number: 45509-002
Project Name: Chongqing Urban-Rural Infrastructure Development Demonstration II Project
Report Date:
Lesson
Inadequate consideration of climatic constraints,working seasons in the project sites, difficult terrain, and availability of experienced local labor and construction materials can cause construction delays with implications on project implementation periods and costs .

Project Number: 37143-033
Project Name: North Eastern States Roads Investment Program - Project 2 and Multitranche Financing Facility
Report Date:
Lesson
The selection of subprojects and project timeliness need to consider the Implementation complexity (such as topography, adverse weather conditions at the construction site, and the need for specialized experts), experience of the executing agency, availability of specialist contractors, and available working seasons.

Project Number: 40648-013, 40648-037
Project Name: Infrastructure Development Investment Program for Tourism (Tranche 4 and Multitranche Financing Facility)
Report Date:
Lesson
Adequate due diligence at project preparation can help prevent or minimize contract variations and implementation delays.

Project Number: 38254-043
Project Name: North Karnataka Urban Sector Investment Program - Tranche 2
Report Date:
Lesson
With demonstrated capability and the distinct advantage of local grounding, national contractors may be considered for future midrange urban projects in Tonga.

Project Number: 42394-022
Project Name: Nuku'alofa Urban Development Sector Project
Report Date:
Lesson
Complex programs, especially novel ones, demand rigorous front-end analyses at appraisal to identify better implementation arrangements and timelines

Project Number: 39500-013, 39500-023, 39500-033
Project Name: Ho Chi Minh City Urban Mass Rapid Transit Line 2 Investment Program (MFF and Tranches 1 and 2)
Report Date:
Lesson
Inadequate due diligence can lead to design deficiencies that will make implementation difficult and necessitate changes in scope and detailed designs, with accompanying impacts on project duration, costs, and delivery of results.

Project Number: 37269-013, 37269-023
Project Name: Greater Mekong Subregion: Rehabilitation of the Railway in Cambodia
Report Date:
Lesson
ADB’s due diligence should build on the EA’s pre-feasibility study and refer to the local and international market rates to arrive at more reliable cost estimates.

Project Number: 42039-034
Project Name: Power Transmission Investment Program - Tranche 1
Report Date: