OAKLAND -- Huge leaping flames from an exploding gasoline tanker melted the steel underbelly of a highway overpass in the East Bay's MacArthur Maze early this morning, causing it to collapse onto the roadway below and virtually ensuring major traffic problems for weeks to come.
The elevated roadway that fell carried eastbound traffic from the Bay Bridge onto Interstates 580 and 980 and state Highway 24. It draped like a blanket over a roadway below, a connector from southbound I-80 to I-880 that also was severely damaged.
The single-vehicle crash occurred on the lower roadway when the tanker, loaded with 8,600 gallons of unleaded gasoline and heading from a refinery in Benicia to a gas station on Hegenberger Road in Oakland, hit a guardrail at 3:41 a.m.
Engineers said the green steel frame of the I-580 overpass and the bolts holding the frame together began to melt and bend in the intense heat
-- and that movement pulled the roadbed off its supports.
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