for the November challenge..Pink Floyd Song Titles..to see the work of other participants click on - http://form.pbase.com/viewtopic.php?f=16&t=42595
the white streak caught crossing the nearest, upper bridge, would be from a passing skytrain, a local commuter rail service...the middle bridge, with a red streak from the tail-lights of southbound traffic, is for vehicles...and the lower bridge is for ordinary trains...all three bridges span the Fraser River at New Westminster, about 30 minutes drive south-east of downtown Vancouver