GRANITE CITY, Ill. (AP) — Shipping resumed Thursday through one of the Mississippi River’s busiest locks, after crews completed emergency repairs that took days and that stranded hundreds of barges destined for points north or south.

By the time the U.S. Army Corps of Engineers reopened Lock 27 at Granite City, just north of St. Louis, about 3:30 a.m. Thursday, the Coast Guard said the traffic jam had grown to 63 vessels and 455 barges — carrying enough cargo to fill 6,100 railcars or 26,400 large tractor-trailers.