Productivity Effects of Public Capital Maintenance: Evidence From U.S. States

This article assesses the productivity effects of infrastructure operation and maintenance (O&M) spending by state and local governments in the 48 contiguous U.S. states over the period 1978–2000. We explicitly account for transboundary spillovers of capital and O&M spending and follow a semiparametric methodology that allows us to estimate state‐specific output elasticities. We find strong evidence that in all 48 states the cross‐state spillover effects of O&M outlays on productivity exceed their within‐state impacts and are substantially higher than the spillover effects of capital expenditure. ( JEL C14 , E22 , E62 , H76 , O11 , O47 , R11 )