This paper exploits temporal and spatial variation in the deployment of Israeli army road obstacles in the West Bank during 2004-2012 to quantify the marginal effects of market access on the local economies of Palestinian locations. We construct a comprehensive metric of market accessibility to assess how obstacles affect locality-level growth, proxied for by nighttime lights. Panel regressions find a 10% relative increase in market accessibility generates a 1-3% relative increase in a location’s growth rate of lights.