Webone lane of interstate 680 at the mormon bridge over the missouri river opened tuesday evening in each direction, transportation officials from nebraska and. Above 32 feet, floodwater begin to impact portions of council bluffs, especially. Webone lane of interstate 680 at the mormon bridge over the missouri river opened tuesday evening in each direction, transportation officials from nebraska and iowa said. Webthe town of oak island has activated its emergency operations center and closed several key roads and bridges due to heavy flooding caused by potential. Webstate traffic engineers have closed one eastbound lane of omaha’s historic mormon bridge on interstate 680 indefinitely because of damage to the roadway.