Con­cerned about bridge dur­ing quake

San Francisco Chronicle Late Edition - - OPINION -

If cars and heavy trucks driv­ing west across the up­per deck of the Rich­mond-San Rafael Bridge can cause chunks of con­crete as large as bas­ket­balls to fall on the un­sus­pect­ing east­bound mo­torists be­low, I can only imag­ine what a ma­jor earth­quake would do to the struc­ture. Trans­porta­tion of­fi­cials may claim that erod­ing con­crete does not af­fect the bridge’s struc­tural in­tegrity; how­ever, such un­planned, grid­lock-in­duc­ing shut­downs and sub­se­quent emer­gency re­pairs do not pro­vide much con­fi­dence in its gen­eral safety. Richard Panuschka, Sacra­mento

Peter DaSilva / Spe­cial to The Chron­i­cle

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