MoDOT opened an additional bridge upstream of the original span, as a result of increased congestion. The bridge was initially built for two eastbound lanes, however the shoulders were converted to travel lanes in 2001, for a total of four lanes.
To alleviate congestion, MoDOT erected another bridge upstream from the original structure. Initially built with two eastbound lanes, the bridge's shoulders were repurposed as additional lanes in 2001, bringing the total to four lanes.