Elissa Rivas explains why your first choice as an alternate may not be the answer this time.HOUSTON, Texas (KTRK) -- The northbound and southbound lanes of the Sam Houston Tollway Ship Channel Bridge are temporarily closed.Drivers may take the I-610 bridge as an alternate.[Ads /]There's no immediate word on how long the closure may be in place.Live traffic map [Ads /]Do you hate Houston traffic as much as we do? Join the club! Report a correction or typo