Road infrastructure drives economic development by facilitating trade, mobility, and regional integration. In Nigeria, poor road networks and traffic inefficiencies limit productivity and growth. This study examines the economic impact of the Nnewi-Okija Road dualization in Anambra State, a key corridor linking commercial and industrial centers. Using a mixed-methods approach with 250 respondents, data were collected via questionnaires, interviews, focus group discussions, and field observations, and analyzed with Pearson correlation. Results show strong positive associations between road dualization and economic indicators: business income improvement (r = 0.68), property/land value increase (r = 0.81), and reduced transport costs (r = 0.92). Travel time under 30 minutes increased from 10% to 58%, while trips over 60 minutes fell from 54% to 12%. Approximately 68% of businesses reported improved performance, with 65% experiencing revenue growth above 10%, and 24% gaining 31-50%. The project also spurred new economic activity: 71% noted new businesses, 81% reported higher property values, 74% observed improved transport services, and 56% gained employment, despite 48% experiencing temporary disruptions. Field observations confirmed smoother traffic flow, increased commerce, and visible infrastructure development. The study concludes that dualization of the Nnewi-Okija Road significantly improved transport efficiency, business performance, and regional development. Recommendations include regular maintenance, traffic management enhancements, and support for local enterprises, complementary infrastructure development, and ongoing stakeholder engagement to sustain and maximize long-term economic benefits.
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