* wrote:

Tom wrote in article ...

Ned Simmons wrote:

http://think2020.tripod.com/photo.htm

2000+ years and still working...Whereas I-35W was 40?




Are you suggesting that the 2000 year-old bridge withstood dozens of
100,000 pound trucks on a daily basis througout its lifetime?

Most of today's Interstate bridges would last forever if we didn't use
them!!!!!

Apples-to-apples, please.

Truly you're a star! However, your reasoning will terrify millions of
Americans as you're saying that US bridges of the "modern" era don't
have any load capacity redundancy. I notice that there is a fast growing
prevalence in the US for people to employ drivers to get them across bridges,
your doing?

As for the 2000 year bridges, they did what they were designed to do
with a safety redundancy that sees them still standing. I think there's
been odd American, John A Roebling springs to mind, who have been able
to do this.

As for 100,000lb trucks, pie in the sky? or did you just pluck that
off an apple tree? If so, it wasn't a Minnesota apple tree.