Main Roads Western Australia

Perth, Western Australia, Australia

This 688m long, 28.8m wide bridge was designed to accommodate six lanes of traffic. An unusual feature of the design was the provision of pedestrian walkways and cycle ways cantilevered from the lower flanges of the superstructure. The construction consisted of nine continuous spans of precast double-cell single box post-tensioned concrete segments, supported by sculptured reinforced concrete piers.
A significant achievement of the construction work was the employment of a technique developed by Clough to support each stage of the erection of the superstructure. A 500 tonne steel falsework truss, which was floated into position on barges, was suspended from the end of the previously completed stage of the superstructure to the next pier and cantilevered forward to the end of this stage.
The truss was cable stayed for additional support from a 34m high tower on the previous pier. The tower was guyed with back-stay cables that were tightened with hydraulic jacks as the weight of the precast deck was added to the truss.
Clough’s work on the Mt Henry Bridge won the Company the Institution of Engineers of Australia “Western Australian Engineering Award” for 1981

Mt Henry Bridge
Mt Henry BridgeLearn More

Mt Henry Bridge

Learn More

Main Roads Western Australia

Perth, Western Australia, Australia

This 688m long, 28.8m wide bridge was designed to accommodate six lanes of traffic. An unusual feature of the design was the provision of pedestrian walkways and cycle ways cantilevered from the lower flanges of the superstructure. The construction consisted of nine continuous spans of precast double-cell single box post-tensioned concrete segments, supported by sculptured reinforced concrete piers.
A significant achievement of the construction work was the employment of a technique developed by Clough to support each stage of the erection of the superstructure. A 500 tonne steel falsework truss, which was floated into position on barges, was suspended from the end of the previously completed stage of the superstructure to the next pier and cantilevered forward to the end of this stage.
The truss was cable stayed for additional support from a 34m high tower on the previous pier. The tower was guyed with back-stay cables that were tightened with hydraulic jacks as the weight of the precast deck was added to the truss.
Clough’s work on the Mt Henry Bridge won the Company the Institution of Engineers of Australia “Western Australian Engineering Award” for 1981