2004 Heritage Assessment of Glenhaven Bridge for Baulkham Hills Council. Sandstone outcrop on Cattai Creek. Susan McIntyre-Tamwoy] Roads, Bridges and TransportSydney - WesternHeritage AssessmentResearch Authors: Rosemary Kerr, Historian and Sid French, Engineer Client: Baulkham Hills Shire Council The purpose of this study is to assess the heritage significance of the existing timber beam bridge over Cattai Creek at Glenhaven and to provide recommendations to Baulkham Hills Shire Council regarding it's future management.