Christopher George was thrown from bike, then hit by vehicle that drove off.
St. Louis County prosecutors charged John Lyons with first-degree robbery and resisting or interfering arrest.
The department must close three lanes on the Poplar Street Bridge starting at 8 p.m. Friday night to remove the barrier wall along the bridge.
The section of Lindbergh carries 34,000 vehicles per day and is expected to be reopened by June 29.
The Westbound ramp from the bridge traveling onto Southbound I-55 and Westbound I-44 is closing.
St. Louis city police say a murder charge could be filed against a woman who allegedly crashed a car with four passengers inside, including her boyfriend, on purpose.
Accidents in downtown St. Louis, Wellston and South St. Louis County
Icy conditions are blamed for several morning rush hour accidents in the St. Louis region.
Interstate 55 is closed in both directions between I-270 and Meramec Bottoms Road after a three-alarm tractor-trailer fire.
Illinois State Police released the information.