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Only tangentially related, but I'm a bit dissapointed by Google Maps: when searching for this tunnel (and the tram line that it doubles as an escape tunnel for), all the copyright notices are from 2023, but there is no trace of it to be seen. I was expecting to at least see the construction works (these things usually take years to complete), but nothing. And there's also no "transit" layer for Bergen. Gotta do bette…
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Ok I'm clearly talking to an expert here but isn't there a factor of vibration from vehicle traffic to take into account? And sure humans if packed into a bridge might be heavier than cars per square foot, but they're usually not packed like sardines on a bridge.
Famous example of pedestrian bridge resonances: https://en.m.wikipedia.org/wiki/Millennium_Bridge,_London#Re...
One has to consider what is daily use, not just the exceptional cases.
Why can't we support and encourage cycling without vilifying cars in these threads? I've seen plenty of places that do both very well, like Spain. Everybody has a car and bicycle (at least one) and uses whatever fits the purpose at the time. I get it, when there's not cycling infrastructure everybody is forced to take the car even if it doesn't make any sense, like for short trips, good weather, single passenger, no…
> But there's plenty of occasions when you really need a car. Eh, depends on your needs, really. I've gotten along without one for decades; I keep meaning to learn to drive, but it never rises to the top of the priority list as I just don't really have a use for it.
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I'm a Notjustbikes superfan and love my bike, but container ships are a marvel of efficiency and emissions per kg per km are probably better for the ship. cyclist: 21g CO2 per km lifecycle - https://ecf.com/news-and-events/news/how-much-co2-does-cycli... Say I can manage 100kg on a cargo bike, that puts us at 210mg CO2 per km per kg. Container ship: 16g CO2 per tonne per km - https://8billiontrees.com/carbon-offsets-…
CO2 is but a small part of the equation, container ships release other nasty things. Even for cars co2 isn't the main issue, particulates from tires and brakes will fuck you up faster than any amount of co2
> The two main pollutants from a ship’s emissions are Nitrogen Oxides (NOx) and Sulphur Oxides (SOx). These gases have adverse effects on the ozone layer in the troposphere area of the earth’s atmosphere which results in the green house effect and global warming.
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Eh, not exactly. Pedestrians are heavier than cars in terms of pounds per square foot. Bridges are designed for extreme loads, including pessimistic pattern loading, and the requirements for pedestrian bridges aren’t any less safety critical. (edit: I designed this bridge: https://www.google.com/maps/@47.597616,-122.3297804,3a,75y,7... )
Yeah, the potential loading is annoying. I remember wondering why predestrian/cycle bridges were always so annoyingly narrow despite having low loads. The issue is of course that they have to be strong enough to support being crammed with hundreds of people when everyone is there to watch the local fireworks/rowing race/anything else that's happening, even if that happens almost never.
Where are you from? I haven't seen an "annoyingly narrow" ped/cycle bridge in Sweden or Belgium.
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Eh, not exactly. Pedestrians are heavier than cars in terms of pounds per square foot. Bridges are designed for extreme loads, including pessimistic pattern loading, and the requirements for pedestrian bridges aren’t any less safety critical. (edit: I designed this bridge: https://www.google.com/maps/@47.597616,-122.3297804,3a,75y,7... )
Yeah, the potential loading is annoying. I remember wondering why predestrian/cycle bridges were always so annoyingly narrow despite having low loads. The issue is of course that they have to be strong enough to support being crammed with hundreds of people when everyone is there to watch the local fireworks/rowing race/anything else that's happening, even if that happens almost never.
Love this quote: Friday marked the 32nd anniversary of the walk across the Golden Gate Bridge, an event The Chronicle's Peter Hartlaub once referred to as "the largest clusterf— in Bay Area history where no one actually died."
It's the escape tunnel for a tram tunnel with an extra coat of paint: https://www.lifeinnorway.net/bergen-cycle-tunnel/
> It will cost an additional NOK 500 million to upgrade the tunnel from an emergency service to one that can be used daily. $46M USD, to save cyclists 5.5km/20 minutes; that seems like a pretty good return.
That obviously depends on a lot of parameters, not least how many cyclists are impacted and how often.
Petrostate mega projects.
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And assuming that this will increase the number of people who choose to bike instead of to drive, you can also add savings for all the remaining drivers who get a slightly easier commute.
And a healthier society (on the whole) as people are encouraged to cycle. Less diabetes, etc.