Infraplus Consulting was appointed by the National Procurement Commission to provide consultancy services for the detailed engineering design of new bridges and river training structures in Timor Leste. The project includes the design of new bridges in Bobonaro and Hinode, as well as river training for existing bridges to mitigate flood risks and improve structural safety.

Infraplus’s role encompasses engineering services, geotechnical investigations, structural design, and environmental impact assessments. The consultancy also involves preparing comprehensive tender documents and design layouts, ensuring adherence to road safety, value engineering, and cost-effective solutions while optimizing the design parameters.

Scope of Work:

Phase I: Options Study & Feasibility Study:

Conduct a thorough review of relevant documents and engage with stakeholders
Perform surveys and investigations to assess site-specific requirements
Preliminary design works to identify optimal intervention strategies and design solutions

Phase II: Preliminary Design, Geotechnical Investigation, & Tender Documentation:

Preliminary design for new bridges and river training structures based on accepted professional standards
Detailed geotechnical investigations to assess soil conditions and suitability for bridge construction
Preparation of tender documents for future construction phases

1. Design & Technical Services:

Bridge Design Concepts: Develop initial design concepts based on Value for Money (VfM) and life-cycle cost analysis
Design coordination with environmental and social impact assessments
Engineering design for the road network, bridges, and river training structures
Design of protection structures for existing bridges and approach roads
Geotechnical assessments to guide foundation design

2. Technical Parameters & Design Considerations:

Design of road alignment and bridge structures, including:

Vertical separation between carriageways
Horizontal and vertical curvatures, super elevation, and drainage requirements
Travel way width, shoulder width, and stopping sight distance
Design of junctions and intersections, including merging lanes and deceleration lanes
Location of paved ditches, curbs, retaining walls, and guardrails
Preliminary layouts for parking areas, taxi stops, and bus bays

3. Environmental and Safety Considerations:

Conduct Environmental Impact Assessment (EIA) to assess adverse effects and propose mitigation measures
Assessment of road safety aspects, including traffic flow optimization and road safety barriers
Value engineering to ensure cost-effectiveness while maintaining design quality

4. Financial & Cost Planning:

Capital investment analysis for land, civil works, plant, and machinery
Preparation of indicative BOQ (Bill of Quantities) and rough cost estimates for construction
Cost estimation for construction supervision, operation, and maintenance

5. Tender Documents & Project Management:

Preparation of tender documents for construction supervision and project management
Preliminary construction schedule, milestone payments, and progress monitoring strategies

Deliverables:

Preliminary design reports for road and bridge systems
Geotechnical investigation reports and soil analysis
Design drawings for road and bridge layouts, including pavement designs and drainage systems
Bill of Quantities (BOQ) and rough cost estimates for civil works
Environmental Impact Assessment (EIA) and safety analysis reports
Tender documents for the next stages of construction and project supervision

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