Background: The study area has different infrastructural deficiencies with compare to other regions. The natural constraints for communication, Poverty, Infrastructural deficiency, Rurality, and Transportation barriers are the main problems in this region. This study has tried to determine the different road connectivity and their impacts on daily sustainable livelihoods among the commuters of Sandeshkhali-I CD block in North 24 Parganas district of West Bengal, India. Materials and Methods: The study has used the Primary and Secondary data to fulfill the objectives. To execute the objectives, road networks are differentiated to measure the road connectivity indices (Alpha, Beta and Gamma Index) from different Gram Panchayats (GPs) to find out the road network condition in this rural deltaic region of the Indian Sundarban. Using the Random sampling to collect the primary data through questionnaire from commuters at different busiest places in the study area. Based on different selected livelihood components, the daily livelihood sustainability index has been evaluated. To find out the relationship the road connectivity Indices (R.C.I.) and daily livelihood sustainability index (D.L.S.I.) are correlated with the help of Karl Person ‘r’ value. Results: The highest values of Alpha, Beta and Gamma Indices are 0.34, 1.89 and 0.65 with respect to Metalled and Unmetalled roads. The daily livelihood sustainability index value has been found 54.33 and 17.54 as the highest and lowest respectively. The positive and negative values are present in the correlation between R.C.I. and D.L.S.I. Conclusion: From the outcome, most of the GPs are under the low and very low livelihood sustainability category whereas, the rest of the GPs have medium to high livelihood sustainability status as per selected class. The study concluded that the development needs to be accounted for because of intra-regional imbalance among the road connectivity as well as daily livelihood sustainability that has already existed in this area