Blue Mountains Highway Closure Extended: NSW Reveals Plans for New Bridge

The Great Western Highway, a vital link between Sydney and New South Wales' central west, will remain closed for at least another year. The closure, which has been in place since March, was prompted by the discovery of critical structural cracks in the 194-year-old Mitchells Causeway, also known as the 'Convict Bridge'. The NSW government has announced plans to build a new structure above the bridge, with construction set to begin shortly. The road is expected to reopen between April and June next year. The closure has had a significant impact on commuters and motorists, with around 12,000 vehicles previously using the bridge daily. To mitigate the effects of the closure, the government has announced an additional $20 million in financial support for small businesses in the area, as well as free coaches and $50 million in upgrades to detour routes. While some have expressed skepticism about the project's timeline, experts say the plan to build an independent bridge deck is a practical solution to the engineering challenges posed by the site. The new structure will be designed to allow for future widening, potentially enabling an additional lane to be added. However, this would require significant additional work, including wider bridge decks and larger piles, which could add to the project's cost and complexity. Local MPs are divided on the issue, with some calling for faster progress and others defending the project as a necessary investment in the region's infrastructure. Despite the uncertainty, engineers believe the proposed solution is technically sound and offers the best long-term outcome for safety, resilience, and reliability.