Vital Blue Mountains highway to be closed for another year as NSW reveals bridge plans
A key section of the Great Western Highway in the Blue Mountains will remain closed until at least mid-2026 as a new bridge is built over the historic Convict Bridge, causing extended detours for residents.
A vital road linking Sydney with New South Wales' central west will stay shut for at least another year, leaving Blue Mountains and Central Tablelands residents facing prolonged travel times and detours. Transport for NSW closed the Victoria Pass section of the Great Western Highway in March after critical structural cracks were found at Mitchells Causeway, or "Convict Bridge", a 194-year-old convict-built infrastructure.
The NSW government announced on Friday that a new structure would be built above the bridge, with construction starting within weeks. The road is now expected to reopen between April and June next year. In March, the NSW roads minister, Jenny Aitchison, said the road would be closed for at least three months.
The bridge was used by about 12,000 vehicles daily, and its closure has forced many commuters to take major detours. The new structure could allow for an additional lane in the future, which was not possible with the current bridge.
Civil engineering contractor Seymour Whyte was selected after an accelerated procurement process. The state government announced an additional $20 million in financial support, increasing the grant amount for small businesses in hardship areas from $10,000 to $25,000. The package also extends eligible areas. The government will provide free coaches and spend $50 million on ongoing upgrades to detour routes.
Minister for regional NSW, Tara Moriarty, said the financial relief would be paired with logistical support. The Nepean Blue Mountains Local Health District said the updated timeline would not compromise local healthcare.
Despite the timeline, the announcement has been met with scepticism. NSW Liberals leader, Kellie Sloane, said there is "white-hot anger" in communities cut off, and the compensation package barely touches the sides. Nationals MP Paul Toole said he wants 24/7 work and that the announcement offers "a timeline, but no confidence".
Blue Mountains MP Trish Doyle defended the project, saying they are "building something better". Engineering experts noted the steep, narrow, and geotechnically challenging terrain limited options, but the new bridge is a practical way forward.
