Development Infrastructure

Development Infrastructure

Development Infrastructure

A long-term solution will substantially reduce the impacts of floods in the lower Msimbazi River Basin, improving the hydraulic capacity of the river, providing an area for flood water detention, building the resiliency of key transport infrastructure, regenerating valuable land assets to control encroachment in flood-prone areas while allowing for public recreation and urban development and reducing degradation of the Msimbazi watershed.

msimbazi basin

Flood Control Interventions will:

  • Improve the degraded river channel, recontouring the river and flood plain to improve flow capacity and allow for floodwater retention
  • Widen and raise the Jangwani Bridge to accommodate flash flood events
  • Relocate bus depot facilities and upgrade existing roads and bridges in Msimbazi River Basin
  • Establish the Msimbazi city park and redevelopment area to reduce the risk of encroachment and allow for recreational and low-carbon and resilient real estate development
  • Reforest the upstream and green riverbanks to restore natural assets of the river
  • Reduce waste in the river to increase its capacity
Flood Control Interventions
 
This subcomponent will address key priorities for flood control infrastructure in the Lower Msimbazi Basin. The investments aim to improve the degraded river channel, recontouring the river and flood plain to improve flow capacity and allow for floodwater retention. Key investments include, inter alia:
   (a) River channeling, excavation of the flood plain, and construction of a multi-level flood retention area;
   (b) River-bank protection works;
  (c) Sediment management activities including the construction of river maintenance depots; sediment and litter traps;  equipment and operational costs;
  (d) Construction supervision; and,
  (e) Designs for future interventions.
 
Resilient Transport Infrastructure
 

This subcomponent will upgrade key transport infrastructure in the project area to protect existing public transit assets and minimize disruptions during the rainy season, incorporating climate and disaster-resilient designs. Key investments include:

  (a) Widening and raising the Jangwani Bridge to accommodate flash flood events, including upgrading it to a multi-span  bridge, raising embankments and improving stormwater conveyance including construction supervision;

  (b) Demolishing existing BRT bus depot facilities and construction of a new bus depot; and

  (c) Upgrading existing bridges and roads in Msimbazi River Basin to improve hydraulic conveyance and connectivity in the river basin.

 
Msimbazi City Park and Redevelopment Area
 
This subcomponent will finance interventions to implement and sustain the land uses in the flood retention area in the Lower Msimbazi River Basin to reduce the risk of encroachment and allow for recreational and low-carbon and resilient real estate development. Key investments include: 
  (a) Carrying out a Msimbazi wetland and city park development, including greening and mangrove revitalization, utilities infrastructure and equipment, street and pathways, facilities and buildings, sports and recreation facilities, and market areas; 
  (b) Constructing sites as well as green and resilient ancillary service infrastructure (e.g. roads, street lighting, drainage, wastewater management infrastructure, etc.) to enable a mixed-income, mixed-used urban development.  
 
Watershed Management through Greening, Erosion Control, and Litter Management
 
This subcomponent will focus on nature-based solutions and improved urban services to address the environmental and social challenges that contribute directly to the reduced carrying capacity of the river through restoring natural assets and reducing waste in the river. Key investments include: 
   (a) Upstream reforestation program; 
  (b) Implementing erosion prevention and greening including reinforcement of riverbanks, urban greening along riverbanks and tributaries and communications program; 
    (c) Construction of sandtraps in upstream areas; 
   (d) Implementing a community solid waste management program including provision of equipment, construction of  materials recovery facilities, implementing design and communications greenhouse gas emissions through recycling; and, 
    (e) Results based financing for improved solid waste collection and recycling.
Project Activities Summary I