Assessing the wider economy impacts of transport infrastructure investment with an illustrative application to the North-West Rail Link project in Sydney, Australia

► Computes impacts of transport infrastructure change on the wider economy. ► Develops an integrated transport-location-economy-wide model system (TRESIS-SGEM). ► Presents new agglomeration elasticities for Australia. ► Presents wider economy markup over conventional transport user benefits. ► Shows 17.6% markup over the conventional transport user benefit for case-study.