RTA’s Plan of Action
Restoration not Replacement
Hampden Bridge has historical significance at a State level as the second major suspension bridge constructed in NSW. In recognition of the bridge’s rarity and historic and aesthetic qualities the Road Traffic Authority (RTA) set about a conservation program to responsibly restore the bridge for current and future generations. This option was chosen above using modern technologies or replace in favour of a two crossing.
How did the RTA set about the restoration of Hampden Bridge ?
Firstly the RTA established conservation policies to guide its ongoing maintenance and operation of Hampden Bridge. This was to ensure it retained and protected the conservation values for the long term.
Secondly the RTA:
- replaced the deck with a new wood deck, laid in the same fashion as the original
- reinforce the abutments
- replace the bearings
- replace the mid-span pins
- and improvement the end restraints to the edge stiffening trusses.
The restoration program used:
- The total length of timbers in the 78 metre long deck is approximately 4.389 kilometres. Every metre of this timber was replaced as part of the restoration work.
- These timbers weigh a combined 136 tonnes – or the same as 100 hatchback cars.
- During the redecking of the bridge approximately 8,000 individual bolts were used to fix timbers together and in place.
- Approximately 1500 litres of paint were used to repaint the timber bridge trusses.
Did you know
- Hampden Bridge is actually 177mm, or approximately 7 inches, wider than is shown in the original 19th Century engineering plans. It’s uncertain when over the last 113 years the shift from the original plans happened, however RTA engineers suspect it may have been during construction of the bridge!
Come and See
Come and see the Hampden Bridge restoration results for yourself and enjoy a self guided tour and visit the Pioneer Museum Park (beside the bridge) and enjoy beautiful Kangaroo Valley.