Blue Mountains highway closure due to historic convict bridge failure
Consensus Summary
The Great Western Highway at Victoria Pass, featuring a 1832 convict-built stone causeway, was closed indefinitely on 10 March 2026 after cracks and structural movement were detected. The closure—affecting 12,000 daily vehicles and diverting traffic via Lithgow’s congested streets—has sparked outrage among residents, businesses, and freight operators. Geotechnical assessments, including 24/7 drilling and 3D imaging, are underway for at least two weeks, with repairs expected to take a minimum of three months. The failure follows years of warnings from local groups and political debates over a proposed $2bn twin-tunnel project, which was abandoned by the Minns Labor government and federal Albanese administration in 2022–2023. While the government prioritizes safety, communities face disruptions to commutes, school routes, and economic activity, with calls for compensation and long-term infrastructure solutions growing louder. Critics argue the closure highlights systemic neglect of regional transport, contrasting with fast-tracked projects in metropolitan areas.
✓ Verified by 2+ sources
Key details reported by multiple sources:
- The Great Western Highway at Victoria Pass (Mitchell’s Causeway/Convict Bridge) was closed indefinitely starting Sunday 10 March 2026 after cracks and movement were detected in the 1832 convict-built stone causeway.
- The closure affects 12,000 daily vehicles and diverts traffic via Lithgow’s Main Street, Chifley Road, and Darling Causeway, adding 1–2 hours to Sydney–Central West journeys.
- Geotechnical engineers require at least two weeks of 24/7 assessment (including drilling and 3D imaging) before repairs can begin, with the entire closure expected to last at least three months under the most optimistic scenario.
- The closure impacts 900,000 tonnes of annual road freight (including food and petrol) and has triggered calls for government compensation for affected businesses like Little Hartley’s The Lolly Bug shop.
- Transport for NSW installed real-time sensors on the bridge in late 2025 after warnings from the Blackheath and District Chamber of Commerce about its structural integrity.
- The Minns Labor government and Albanese federal government shelved a proposed $2bn twin-tunnel project (11km tunnels between Little Hartley and Blackheath) in 2022–2023, citing cost and feasibility concerns.
- Regional Roads Minister Jenny Aitchison stated ‘safety first’ is the priority and no shortcuts will be taken to reopen the road, despite community frustration over the timeline.
Points of Difference
Details reported by only one source:
- Chloe Tofler (The Lolly Bug co-founder) fears closure could last much longer than three months and explicitly requested government compensation for her business.
- Former Coalition government spent years and millions studying the tunnel project but doubted its feasibility due to funding gaps.
- Lithgow Mayor Cassandra Coleman described the reliance on a 19th-century bridge as ‘mind-blowing’ and compared regional neglect to ‘second-class citizenship’.
- Ron Finemore (transport director) estimated 50 of his trucks cross Victoria Pass daily, calling the closure ‘extreme’ and citing past progress on tunnel plans being ‘knocked on the head’ due to cost.
- Blackheath and District Chamber of Commerce wrote to Jenny Aitchison on 19 December 2025 warning of the bridge’s ‘real possibility of failure’ and requested structural investigations, which were ignored.
- ABC reported geotechnical crews are working six-hour rotating shifts on site, and the Bells Line of Road (alternative route) is being upgraded but remains unreliable for heavy vehicles.
- A tow truck is stationed at the base of Bells Line of Road to assist trucks losing traction on its steep inclines.
- Road Freight NSW warned major projects may be delayed due to permit requirements for diverted heavy vehicles, which can take weeks to arrange.
- A $232m, 2.4km ‘road to nowhere’ was built at either end of the shelved tunnel project, bypassing Little Hartley but still connected to the single-lane Victoria Pass.
- Lithgow Mayor Cassandra Coleman noted one business lost 70% of takings due to the closure, and residents face 2+ hour school commutes (previously 10 minutes).
- Behzad Fatahi (UTS civil engineering professor) suggested cracks may stem from crushed stone deterioration or movement of the northern retaining wall, proposing cement injection as a medium-term fix.
- Paul Toole (Nationals MP) compared regional neglect to fast-tracked projects in Sydney/Newcastle, calling the tunnel decision ‘cost-free political’ due to Labor’s lack of western seats.
- Minister Jenny Aitchison explicitly stated the closure ‘causes real hardship for families, workers, school communities, freight operators and local businesses’.
- No mention of compensation commitments, but Aitchison referenced a ‘whole of government response’ in development.
- Alistair Lunn (TfNSW executive director) stated the failure is ‘complicated’ and involves assessing ‘fill material’ and bore water pressure, with deeper drilling planned to check bedrock infrastructure.
- Lithgow Mayor Coleman described the town as a ‘traffic interchange’ with noise pollution starting at 4am, affecting residents on Mort Street.
Where the reporting differs
Details that conflict, or appear in only some outlets:
- Article 1 (SMH) and Article 3 (ABC) both state the closure will last at least three months, but Article 7 (ABC) initially reported only a two-week closure for geotechnical assessments (later updated).
- Article 1 and Article 5 (Newscomaau) emphasize the closure is ‘indefinite’ or ‘at least three months,’ while Article 7 (ABC) initially framed it as a ‘fortnight’ before clarifying longer-term implications.
- The Guardian reports the diversion adds 25 minutes to journeys ‘but longer during peak times and weekends,’ while SMH states it adds ‘at least one hour’ to a return trip.
- Article 2 (ABC) claims the Blackheath Chamber of Commerce’s December 2025 letter went ‘unanswered,’ but no other source confirms this claim or provides evidence of a response.
- Article 4 (Guardian) states the tunnel project was ‘shelved entirely’ in 2023, while Article 1 (SMH) notes the Minns government and Albanese federal government ‘eventually ditched it’ without specifying a single year.
Source Articles
‘Major failure’: Key Blue Mountains highway to be closed for at least three months
With 12,000 vehicles using the road every day, the prolonged blockage will affect the delivery times and cost of produce from the region to Sydney.
Government warned now-closed 'horse and cart' Convict Bridge unfit for modern traffic
The Blue Mountains community warned the NSW government the Great Western Highway's historic Convict Bridge could not withstand modern day traffic prior to its closure last week.
Breaking: Highway linking Sydney to western NSW closed for at least three months
Extra rail and bus services will be rolled out after cracking on a convict-era bridge closes one of the main roads between Sydney and western NSW.
A key Blue Mountains road closure is blowing out travel times – and causing ‘red hot anger’ among locals
NSW government says Convict Bridge will take at least three months to fix but local MP urges long-term plan for ‘fragile piece of road’ Get our breaking news email , free app or daily news podcast Almost two centuries ago, hundreds of convicts carried out a Sisyphean task in New South Wales’ Blue Mountains. After cutting rock from the cliff face, the chain gangs piled up the sandstone, added retaining walls and built a road. Mitchells Causeway, or “Convict Bridge”, opened in 1832, and was in use
‘Major failure’ to shut key road for months
Thousands of commuters are set to experience prolonged traffic headaches after a major issue led to a vital arterial road linking regional towns to a capital city to be shut down.
‘Mind-blowing’: How a convict-built crossing closed a Blue Mountains highway
The Great Western Highway is now shut indefinitely, as a stone causeway that’s almost 200 years old threatens to collapse under the weight of neglect and political indecision.
'Chaos' as bridge linking Sydney to NSW's west is closed for weeks
A crucial bridge on the Great Western Highway linking Sydney to the state's Central West will be shut for at least a fortnight, while specialists assess why it is moving and cracking.
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