Fisheries managers from Oregon and Washington Tuesday announced that recreational salmon and steelhead fishing will close effective at 12:01 a.m. on Thursday for the mainstem Columbia River from the Tongue Point/Rocky Point line upstream to Highway 395 near Pasco.  The closure remains in effect through October 31 downstream of Bonneville Dam and through December 31 upstream of Bonneville Dam.  Based on recent harvest estimates, recreational fisheries have exceeded their allocation of upriver bright fall Chinook.  Fisheries officials say the action was necessary to avoid additional Chinook mortalities resulting from ongoing fisheries, and to provide additional protection for upriver steelhead.  Recreational fishing for hatchery coho remains open from Buoy 10 at the river mouth upstream approximately 18 miles to Tongue Point.