Hawaii is one of the most stunning places on earth.
But getting from A to B can be a challenge.
So the Big Island is taking on its biggest infrastructure project yet.
A day thought some would never come, the opening of Honolulu’s rail system
That’s right - Honolulu officially has its own fully autonomous mass transit
system that’s the first of its kind in the US.
And while this was a cause for celebration for
many - the project wasn’t exactly on the fast track getting to this point.
Building across such a diverse landscape hasn’t exactly been easy. The $10BN scheme
has now essentially doubled the original budget and is seriously behind schedule.
With so many problems derailing the project over
the years - many wonder if it’s even worth keeping it on track.
Some of the most scenic road trips in the US are
Hawaii’s highways that wind their way through paradise.
While these roads may offer epic views,
the congestion on them can cause major backups. Up until the recent opening of Skyline - Hawaii
didn’t really have access to alternatives like trains for either passengers or cargo.
However, that wasn’t always the case.
Throughout the late 1800s and early 1900s the state did have
various rail systems largely for the purpose of transferring supplies.
But those have all since shut down due to rising costs or aging infrastructure.
Until now, Hawaii’s rail systems only existed for tourism.
While several proposals for additions were pushed throughout
the years - none ever gained any steam. Then as road traffic began to increase
around the mid 2000s - particularly in Honolulu - officials began circulating ideas once again.
And in 2008, voters finally approved an idea for a 32km
elevated railway from the suburbs of Oahu to the bustling capital Honolulu.
The $5BN project promised to alleviate congestion and reduce emissions while
providing a faster alternative to the bus system by 2020.
Ultimately the finalised path will now be a 30km two-track structure with 19 stations. An
additional segment will include 2 more stations that will further extend it in the future.
On average it will travel 48 km per hour,
cutting some commuting times in half and eliminating traffic by 40,000 cars daily.
That will come as a much needed reprieve as Hawaii
ranks as the worst state to drive in thanks to traffic, gas prices, and road conditions.
Officials project around 100,000 passengers will ride the train
daily. It will also be the first autonomous and driverless one in the entire country.
This allows for cheaper and safer operation of the cars as it can
eliminate human error which often is the reason behind accidents and delays.
The railway itself will be elevated because in a landscape with such varying topography,
it’s a bit easier to build over rather than straight through.
It will consist of over 5,000 precast concrete segmental bridges.
With each segment weighing around 50 tons each - connecting
them all requires a massive feat of engineering.
A twin unslung girder is used to raise and complete each segment.
This is a type of trolley that moves across a system of parallel beams carrying materials.
Span by span, the parts are lifted using a crane and onto a cart where
they are then aligned and bonded using an adhesive into the final position.
The elevated design allows construction to often be cheaper - as tracks are
often lighter and narrower than standard or underground tracks.
It's also faster and safer while still allowing activity to go on below.
But even though construction was supposed
to be easier and faster - that hasn’t exactly been the case for the Skyline.
In fact - it’s seriously behind schedule.
With an initial timeline set to complete in 2020,
after a cascade of roadblocks - it’s not expected to be finished until 2031.
As construction began, the project faced a myriad of contract issues and lawsuits
regarding the assessment of archeological sites.
And on top of that, transit authorities spent hundreds of millions of dollars to relocate
electrical lines when they realised a section of the tracks would cut too close to the power lines.
In 2018 - concerns about cracks in the hammerhead piers were raised.
Officials assumed they were caused by shrinkage in the concrete rather than the tracks itself.
A bit like concrete cracks you might see in a driveway.
Over the next few years, the cracks continued to expand.
So workers made repairs on 21 piers with epoxy and a system
of horizontal cabling to prevent any further moisture from entering.
To add to it, reports in 2021 stated that some of the wheels of the train
cars were found to be too narrow in parts of the track where lines crossed together
presenting a major safety issue if not fixed.
Replacing them would be expensive and time consuming.
Instead a short term fix using temporary welds to plug the difference in space was ultimately used.
We reached out to Honolulu Authority of Rapid Transit and Hitachi Rail
for an interview but they declined our request.
With so many roadblocks - it’s no surprise the project blasted through its initial
budget and the first leg of the Skyline didn’t open until June 2023.
And for many - it was a long time coming.
Despite a not so great public track record, over 9,000 excitedly rode it the first day.
Now that the first segment is finally welcoming riders,
the perception of what it can offer Hawaiians is already changing.
Some people loved it, some got motion sick and some have called for later trains,
as they currently only run until 7pm.
But it’s not over yet. With about 40% of the project remaining,
there’s still a long way to go with the track eventually connecting into downtown Honolulu.
As local residents and businesses are covering the cost of budget overruns,
many are left wondering if the benefits will really be worth it.
Only time will tell if Hawaii’s new railway will join the ranks of other
infrastructure projects around the world that were once hated during construction,
but are now loved once they're all done.
You can learn more about this and the other topics on our channel over on The World’s
Best Construction Podcast – available now wherever you get your podcasts.
And as always, if you enjoyed this video and you want to get more from the definitive
video channel for construction, make sure you’re subscribed to The B1M.