The Missouri Department of Transportation will close all lanes of Interstate 170 at Delmar next Friday, July 8, to set girders and install portions of the driving surface for the new bridge.
Lane closures will start around 7 p.m. on July 8, and all lanes will be open again by the morning rush hour on Monday, July 11.
The moderate flooding along the Mississippi River at St. Louis is costing crews building the piers for the new bridge a couple of days of work a week.
MoDOT project manager Greg Horn said workers are still out on the piers six days a week, 20 hours a day. But the flooding - the river is about five feet above flood stage - means crews can only work at about 60 percent efficiency.
The Missouri Department of Transportation is again urging motorists to avoid eastbound Interstate 70 just north of downtown as crews continue emergency repair work on the highway.
St. Louis Public Radio is a service of the University of Missouri-St. Louis.