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New Zealand

Waiting game: Auckland not due to get new harbour crossing until mid 2030s

21 Sep, 2020 05:00 PM6 minutes to read
It will be years before Auckland gets a new harbour croossing. Photo / Brett Phibbs

It will be years before Auckland gets a new harbour croossing. Photo / Brett Phibbs

Bernard Orsman
By
Bernard Orsman

Reporter

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Auckland is not due to get a new harbour crossing until the mid 2030s at the earliest.

Friday's freak 127km/h gust of wind that tipped two trucks on their sides, severely damaging a load-bearing steel strut and causing traffic chaos, is the latest reminder of the fragility of the city's ageing infrastructure.

It is only 12 months since a road-marking truck flipped and burst into flames on the Auckland Harbour Bridge causing mayhem across the motorway system - and a political stoush between the main mayoral contenders, Phil Goff and John Tamihere.

READ MORE:
• Auckland Harbour Bridge: NZTA reveals plan to fix after truck crashes knock out four lanes
• Auckland Harbour Bridge traffic congestion: Latest updates, travel times
• Auckland Harbour Bridge traffic: Latest updates as commuters brace for chaos
• Watch: NZTA gives update on Harbour Bridge repairs as Aucklanders suffer through first day of gridlock

At the time of the local body elections, Tamihere was promising to turn the bridge into a double-decker super structure within six years costing $10 billion.

Goff mocked the idea, saying there was no case for an early start based on advice from the Waka Kotahi NZ Transport Agency and Auckland Transport that a new crossing will be needed after 2030.

Ever since the Auckland Harbour Bridge opened in 1959, a second harbour crossing has been mooted.

There has been talk of a new bridge, tunnels under the Waitematā Harbour, a rail crossing and a radical idea of demolishing the existing bridge for a new arching structure supporting a splay of cables in the shape of a sail.

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Firefighters were on the scene to extinguish the blaze after a crash in September last year. Photo / Antony Gray
Firefighters were on the scene to extinguish the blaze after a crash in September last year. Photo / Antony Gray

The 2007 sail design by a team of architects and engineers would carry cars, buses, bicycles, pedestrians and possibly light rail.

After engineers warned in 2007 of a potential for "catastrophic failure" in a worst-case scenario, 920 tonnes of extra steel was bolted and welded on to the clip-ons to extend the life of the bridge.

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At the time, restrictions were placed on heavy vehicles using the clip-ons to reduce vibration and help keep the bridge stable during welding of steel inside the box girders.

Today, the clip-on lanes are open to 50-tonne maximum permitted heavy vehicles and heavier vehicles can only use the truss bridge.

Last year, an official report for a new harbour crossing was released by the Transport Agency.

The Auckland Harbour Bridge that had a centre span damaged after a truck crash when a powerful gust of wind tipped it over. Photo / Dean Purcell.
The Auckland Harbour Bridge that had a centre span damaged after a truck crash when a powerful gust of wind tipped it over. Photo / Dean Purcell.

After looking at three different options - a tunnel for light rail, a combined road and light rail tunnel, and doing nothing - the agency said the best option was a combination of a light rail tunnel plus road pricing.

The report said truck restrictions could be needed on the harbour bridge by about 2030, noting 11,000 heavy vehicles travel on the bridge every day, most of them trucks. By 2046, that number is expected to reach 26,000.

The report also said the Northern Busway will hit capacity by 2030.

Transport Minister Phil Twyford told the Herald at the time that the planning and approvals process for the crossing would take "no less than a decade" and construction would take five to seven years.

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A business case for the proposal was due to be completed by late last year, but was delayed by six months. The business case has been completed and is now awaiting board approval.

An agency spokesman said there is still more work to be done "to investigate the need, timing, function and form of possible new harbour connections, as well as ongoing interim improvement to the North Shore public transport system".

"This long-term solution will be New Zealand's biggest transport investment costing billions of dollars and will take more than 10 years from now until opening," the spokesman said.

National Party leader Judith Collins has promised to speed up work for construction to start in 2028 on a double-decker tunnel with road and rail on separate levels. The last National Government had a new harbour crossing pencilled in for 2038 to 2048.

National's plan is for a tunnel that would likely run from Esmonde Rd on the North Shore to under the Auckland CBD to connect to rail at Britomart. The road link would join with State Highway 1 at both ends of the tunnel.

National's proposal is included in its $31b infrastructure programme, but uncosted.

Twyford yesterday said the Government is doing the planning work for a second harbour crossing, but indicated there are no plans to fast-track "New Zealand's biggest infrastructure project".

"There is no quick fix here. We cannot afford to rush the planning as no one wants a repeat of the first harbour bridge which needed extra capacity by the time it was finished.

"We're committed to doing the next crossing right. In the meantime, we plan on expanding and upgrading the successful northern busway to help take pressure off the current bridge and ease congestion," Twyford said.

Automobile Association infrastructure spokesman Barney Irvine said the debate around a new harbour crossing has been grinding on for decades with no end in sight.

"We want to see the discussion on a new harbour crossing move ahead urgently, and the current timeframe of the late 2030s feels too far off for us," he said.

Irvine said the AA would like the Transport Agency to reconsider other options for the road part of a crossing, saying a flash new crossing is not much good if there are bottlenecks at either end.

"It's clear to us that any new crossing is going to have to cater to all modes - just private cars or just public transport isn't going to work," he said.

Former North Shore City councillor Gary Holmes said urgent planning for a second harbour crossing has been going on for a long time, saying it was seriously pushed by former East Coast Bays MP Garry Knapp in the early 1980s.

"Almost 40 years on, the need is more urgent now and the incident on the bridge [on Friday], with the probability that the four central lanes may be closed for weeks, should hammer the point home that time for action is now," he wrote on Facebook.

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