The Offaly born designer behind O'Connell and Grattan Bridges along with the Alexander Basin at Dublin Port.

The military surveyor responsible for Dublin city's oldest surviving bridge at Queen St.

The Dublin ballast board inspector of works responsible for a number of Liffey bridges and many lighthouses around Ireland.

A designer and contractor for a number of Liffey bridges including Lucan, the longest arch span in the country.

London born architect responsible for Sean Heuston bridge, adjacent to the railway station of the same name.

The architectural firm responsible for Dublin's second only pedestrian bridge, The Millennium Bridge.

The London born designer of O'Donovan Rossa bridge.

The man behind the Irish design firm responsible for many bridges and infrastructure projects.

The Chief Engineer for the Dublin, Wicklow and Wexford Railway Line, responsible for the design of Loopline bridge.