[steve86]

Yes, it needed support from below “shoring” until the support from above “suspension” was in place.

[steve86]

As such it was a procedural problem (installation procedure), not a materials problem unless something else comes to light.

[Spktyr]

I didn’t see any shoring in any photos or videos of the bridge when it was installed. Someone must have figured that the structure was self supporting under just its own weight - incorrectly.