mekka okereke :verified:
As we hear reports that it will take 10 years (🤯) to replace the 1.6 mile Francis Scott Key bridge in Baltimore, remember that China built the Danyang-Kunshan bridge and Qingdao Jiaozhou Bay Bridge in 4 years each.
Danyang-Kunshan Bridge is 102 miles long, and 100 ft above the water.
Jiaozhou Bay Bridge is 16 miles and 623 ft tall, earthquake and typhoon proof, and can withstand a direct strike from a 300,000 ton cargo ship. That last point is unfortunately topical.
Paul Cantrell
@mekkaokereke @lisamelton
I wonder why that ultra-long timeline? Much shorter length, yes, but the new I-35W bridge took barely over a year to build: https://en.wikipedia.org/wiki/I-35W_Saint_Anthony_Falls_Bridge
Why 10 years? Is it conditions at the site? Low priority? Just a wild early estimate?
Paul Cantrell
@robotistry @mekkaokereke @lisamelton
No, it didn’t. It was one year and six weeks from “old bridge unexpectedly collapsed” to “new bridge ready for traffic.” Read the link.
Robotistry
@inthehands @mekkaokereke @lisamelton
There's a major difference between starting at breaking ground and starting at ideation.
That 1 year construction time probably involved _at least_ 5 years of planning and approvals.
This bridge has to start from scratch, in a constantly changing regulatory and stakeholder context, not from "we can rebuild it from the old blueprints".
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