On Sun, 23 Mar 2008 22:06:51 -0400, Gerald Miller
wrote:

On Sun, 23 Mar 2008 03:54:51 -0700 (PDT), "
wrote:

On Mar 22, 2:52 am, Stealth Pilot
wrote:
on the 14 feb 2006 someone posted shots of a tracked excavator sitting
atop a low loader zipping along at freeway speeds that had the arm
come up and spear through an overhead concrete road bridge.

(it really was that long ago)

does anyone know what eventuated out of the accident?

was the bridge repaired in situ or was the span demolished and
replaced?
what happened to the company that owned the excavator?

these photos resurfaced in an email recently and it piqued my
interest.
I've always wondered what the consequential happenings were regarding
that accident.

thanks
Stealth Pilot

That also happened here in Hawaii. Damaged a pedestrian bridge. It was
replaced.
Karl
Had one here last fall where one pre-stressed beam out of eight was
damaged, one lane of the overpass (four lanes over four lanes) has
been closed all winter. It will be interesting to see how they go
about replacing an interior beam.
Gerry :-)}
London, Canada

it struck me as a fair bugger of a job. over here in australia the
bridges are usually cast on the approaches of the unfinished road then
slid into position on the supports then the road surface and the road
is completed.
I suppose you'd need the precise dimensions. set up the form work and
prestressed reo make the span then low loader it across one of the
existing spans then heavy lift crane it into position. then rebuild
the road surface.

the question in the photo shoot was how much energy was expended.
the answer is half the mass of the tracked excavator and trailer in
lbs times the velocity in ft per second squared. it is the kinetic
energy absorbed bringing the traffic to a halt.
actually seems to be an easy question to answer on reflection.

thanks for the updates btw.
Stealth Pilot