This essay reconceives Chimamanda Ngozi Adichie’s Americanah through the lens of affective infrastructure theory, defined as the assemblages of material and immaterial systems that generate, channel, and regulate emotional intensities. Departing from identity-based and postcolonial readings, it argues that the novel’s portrayal of migration, belonging, and racialization is shaped by everyday infrastructures, hair salons, internet cafés, public transit, immigration offices, that scaffold diasporic life and mediate embodied feeling. Grounded in close textual analysis and infrastructural humanities, the essay traces Ifemelu’s encounters with these sites, how salon rituals encode Black hair politics and self-valuation, how digital platforms forge diasporic intimacy amid precarity, and how bureaucratic delays inscribe slow, cumulative racialization. These case studies reveal how logistical systems generate affective economies of hope, estrangement, and endurance. Further, the essay contends that Americanah’s formal structure, letters, blog entries, internal monologues, visa delays, functions as narrative infrastructure, dramatizing the contingencies of global Black mobility while critiquing the systems that produce racialized precarity. By defining affective infrastructure and tracing its operation in Americanah, this study reframes the novel as an anatomy of the material, emotional, and bureaucratic undercurrents that shape transnational Black life, offering new directions for migration studies, Black Atlantic scholarship, and the cultural politics of infrastructure.