Basis bids for soybeans and corn delivered by barge to the U.S. Gulf Coast have increased due to tight pipeline supplies and slow barge movement through the mid-Mississippi River. Repairs at two locks on the Mississippi River have also delayed barge tows. Meanwhile, farmers are withholding grain sales due to a slide in Chicago Board of Trade corn and soybean futures, leading to tight grain supplies at the Gulf. This has resulted in an inverted CIF market, particularly for soybeans, with March barges commanding a premium over later loadings.