"James Waldby" wrote in message
. ..
On Thu, 07 Aug 2008 13:23:36 -0700, ghb624
wrote:

Pls see this photo, and the question
contained in the caption. Thnx

http://www.flickr.com/photos/ghb624/2741615453/

(A picture of rusty T-head bolt, maybe 1"
diam.)

I've got some circular strap clamps that have
similarly-shaped but
much smaller (1/4"-20) T-head bolts. Picture
that gives the idea:
http://www.globalspec.com/NpaPics/93...ExhibitPic.jpg

Maybe the bolts you found are from bigger
versions of the same thing.
Or they might be hanger bolts that fit into
T-track. In any case, if
they fell off a bridge or other infrastructure
as you imagine, they
probably were holding lights or signs rather
than structure.

Are those from a rail line? Seems like I've
seen something similar bolting pieces of rail
together. Any railroads close to where they
were found?