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Tasman Bridge steel and concrete repairs

ClientDepartment of State Growth
Value$4.3M
StateTasmania
CompletedFebruary 2017

The Tasman Bridge spans over the Derwent River, near Hobart, Tasmania. It is the single largest road transport structure in the state, providing a critical link between Hobart’s Eastern and Western shores.

The Project

The Derwent River is approximately 1100 metres shore-toshore at the location of the bridge. The overall length of the bridge is 1,411 comprising of 52 spans, 21 of which are over the Derwent River.

The bridge was originally opened to traffic in 1964. in 1975 a ship collision closed the bridge and it was reopened in October 1977 after rebuilding and widening. As a result of the ship collision, spans between piers 17 and 19 were replaced with a steel box girder construction. In addition, the concrete span 20 and piers, 17, 19 and 20 were also rebuilt.

The project includes the supply and installation of a Cathodic Protection System to selected pier columns and the repair of steel, concrete and miscellaneous defects.

For the Tasman Bridge project, VEC constructed a ICCP (impressed current cathodic protection) structure. To enable VEC to place this system we were required to remove the existing redundant cathodic protection.

This project has also entailed steel repair and the continuous preparation work for the cathodic protection.

All small concrete patch repairs were identified and then repaired and cataloged. As part of the concrete repairs VEC were required to shotcrete and finish the hydro blasted area.

Hydro demolition additionally played an important role in the project. Skills that involved working at heights and above water were essential to the success of the Tasman Bridge project.

Additionally, ancillary steel work repairs and structural concrete repairs were constructed.

Finally, VEC provided additional cathodic engineering resources to the project to assist moving through a difficult specification.

Head Office

10b Industrial Dr, Ulverstone,
TAS 7315

PO Box 812
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 3 6425 6530
Fax +61 3 6425 6112

Hobart Office

Level 3, 116 Bathurst Street
Hobart, TAS 7000

PO Box 812
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 3 6425 6530
Fax +61 3 6425 6112

Melbourne Office

Level 10, 567 Collins Street, 
Melbourne, VIC 3000

PO Box 812 
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 (03) 9278 5100
Fax +61 3 6425 6112

Queensland Office

2 Burke Street,
Woolloongabba, QLD 4102

PO Box 812 
Ulverstone, TAS 7315
info@vec.com.au

Phone +61 3 6425 6530
Fax +61 3 6425 6112