1. Road Network Date: 02 February 2014
DM-5242: Disaster Resilience Sustainable Development of Housing and Infrastructure
Course Teacher: Dr. Raquib Ahsan SL
Name
Roll 1
Alexius Chicham
405 2
George Mithu Gomes
406 3
Md. Zahidul Islam
411 4
Md. Mahmudur Rahman
422 5
Mahbubur Rahman Sohel
434
MS in Disaster Management Programme (MSDM)
Department of Geography and Environment
University of Dhaka
Date: 02 February 2014

2. Presentation Outline Road network
Road Network Classification with Definition
Road Network (LGED) in Bangladesh
Road Network (R & H) in Bangladesh
Hazards that may effect Road Network
Effects of Hazards on Road Network
Existing damage road network
Road damage statistics
Vulnerability/weakness of that sector
Mitigation in the context of resilience

3. Road Network
Mobility network is crucial for ensuring territorial safety with respect to natural and technological hazards.
They represent a basic support to community’s everyday life although being exposed elements often characterized by high vulnerability to different hazards and, in the meanwhile, strategic equipments for emergency management.
Rural roads contribute significantly to generating increased agricultural incomes and productive employment opportunities, alongside promoting access to economic and social services.

4. Road Network Classification with Definition
Sl.
Type
Definition
Ownership and Responsibility 1.
National Highway
Highways connecting National capital with Divisional HQs or sea ports or land ports or Asian Highway
RHD 2.
Regional Highway
Highways connecting District HQs or main river or land ports or with each other not connected by national Highways. 3.
Zila Road
Roads connecting District HQ/s with Upazila HQ/s or connecting one Upazila HQ to another Upazila HQ by a single mainconnection with National/Regional Highway, through shortest distance/ route. 4.
Upazila Road (UZR)
Roads connecting Upazila HQ/s with Growth Center/s or one Growth Center with another Growth Center by a single main connection or connecting Growth Center to Higher Road System,* through shortest distance/route. (Former Feeder Road Type-B)
LGED/LGI** 5.
Union Road
(UNR)
Roads connecting union HQ/s with Upazila HQs, Growth Centers or local markets or with each other. (Former Rural Road Class-1 (R1)
LGED/LGI 6.
Village Road
(VR)
Roads connecting Villages with Union HQs, local markets, farms and ghats or with each other. (Former Rural Road Class-2 (R2)
b) Roads within a Village. (Former Rural Road Class-3 (R3)

5. Road Network (LGED) in Bangladesh
Types of roads (LGED)
Upazila Road
Union Road
Village Road-Type A
Village Road-Type B
Road Type
Earthen(KM)
Pavement(KM)
Total Length(KM)
Upazila Road :
Union Road :
Village Road A:
Village Road B:
Total Roads:

6. Road Network (R & H) in Bangladesh

7. Hazards that may effect Road Network
Earthquake
Floods and flash flood
Cyclone
Tidal surge/storm surge
Drought
Tsunami
River bank erosion
Landslide
Heavy rain and strong winds
Salinity
Water logging

8. Effects of Hazards on Road Network Infrastructure Impact
Type of Event
Surface Effect
Infrastructure Impact
Cyclone
Strong, gusty winds
Flooding (through rainfall)
Flooding (through storms)
Damages to bridges and roads
(through flooding)
Drought
Dryness of earth
Wind gusts
Shrinkage damages road foundations
Wind damage to road tops
Flood
Soil erosion
Water-saturation
Softening of road foundations
Buried structures such as roads
Tsunami
Floods
Inundation/Submerged
Destruction or damages to roads
Earthquake
Displacement
Cracks
Liquefaction
Collapse of critical elements of the network
Dividing the road surface
Tidal surge/storm surge
Inundation
River bank erosion/coastal erosion
Land erosion
Damage to bridge and roads

9. Road damage statistics
Damage of Road Infrastructure due to Cyclone
November 15, 2007, the SIDR
Roads damaged (Fully) : 1714 km
Roads damaged (Partially): 6,361 km
25 May 2009, AILA
Roads damaged (Fully) : 367 km
Roads damaged (Partially): 1065 km
Damage of Road Infrastructure due to Flood
Floods in 1988
Roads damaged (km): 13,000
Floods in 1998
Roads damaged (km):15927
Floods in 2004
Roads damaged (km): 27970

10. Existing Damage road network

11. Vulnerability/weakness of that sector
Severe lack of quality road-building materials
Poor quality road construction and maintenance
Lack of funding for road maintenance
Recurrent flooding, high intensity rainfall, extreme temperature, and a high
incidence of tropical cyclones further challenge the construction and
Maintenance of a reliable road system
Improper design and construction technique (slope, height, water drainage)
High costs involved in land acquisition
Insufficient supervision during construction
Inadequate compaction and no or insufficient laying of topsoil layers
Road alignment
Lack of coordination between various Government and Non-Gov’t .
organizations (RAJUK, DWASA, DESA, BTRC, R&H, LGED)

12. Role of infrastructure in mitigating disasters
Reduce hazards (flood, storm surge)
Reducing disaster impact
Better communication
Shelter

13. Thank You