(Omaha, NE) -- Traffic is running once again on Interstate-680 after flooding impacted the highway. The Iowa Department of Transportation has reopened I-680 to one lane in each direction at the Missouri River Bridge. In addition, I-29 has been reopened between north 25th Street in Council Bluffs and the I-680 interchange near Crescent. Speed limits on I-680 are being lowered to 55-miles-per-hour, and people are being encouraged to drive slowly in construction zones.