 His work included design of an early version of the Sydney Harbour Bridge that did not proceed to construction, and identification of crossing points for the Brisbane River.He was involved in many major Brisbane projects including an early Victoria Bridge (the abutment is still standing near QPAC) and the Story Bridge.In 2006, Brisbane City Council proposed Hawken Bridge as one of 5 names for a new green bridge linking the University of Queensland to Dutton Park but ended up choosing the name Eleanor Schonell Bridge.