(Construction projects on both sides of the Missouri River continue to show progress.

Despite the many rainy days the past two months, work has continued.

The projects range from the Bismarck Civic Center to a new Burleigh County shop to the Mandan airport.

Reporter LeAnn Eckroth provides updates on projects in Bismarck, Mandan, Burleigh County and Morton County.)

Hoping to avoid a repeat of damage from the 2011 Missouri River flood, local government entities are aggressively working on separate flood protection projects in Bismarck and Mandan.

Riverwood Drive

Work is under way for a flood protection/access and road repair project at Riverwood Drive and Mills Avenue in Bismarck. It is part of a $5.16 million project to improve flood protection for south Bismarck, improve access during a flood, regular mill and do overlay maintenance work for damaged and aging road surfaces. The project includes moving portions of Riverwood Drive 50 or more feet to the east, raising the road, widening the road and giving it enough space for temporary flood protection if needed. The project also includes mill and overlay and patch work for aging or damaged roads.

Northern Improvement crews started by removing trees last Monday to make room for the higher, wider road. It will built just east of the existing Riverwood Drive road that is in place.

“We’re going to leave the existing road open while we construct the new road,” said Bismarck Public Works Director Jeff Heintz.

Work will be completed in late October, he said.

Hescos remain in place on the old piece of Riverwood Drive as protection. It was first raised during the record Garrison Dam releases of 150,000 cfs in the summer of 2011.

In the spring of 2012, crews paved that part of the road, while city officials prepared new road protection plans.

When completed, the new piece of Riverwood Drive at Mills Avenue will protect at the 20-foot flood level.

“Once the new road is completed, we will take the Hescos from 2011 off,” Heintz said. “It would hold the water levels of 19.3 feet we saw in 2011. If we were to seek 150,000 cfs releases from the Garrison Dam, this would protect south Bismarck. ... If there is new flooding, we have made the new road wide enough so we can add additional Hescos for protection.”

Heintz said the three weeks of rain in June did not cause any significant delays in the project. He said there may have been delays due to special assessment meetings the city held to explain how south side Bismarck residents will pay for the work.

Residents who will pay for the project will benefit either through flood protection, access if there is a flood or general road surface improvements, said planning staff.

Tavis Road

Burleigh County Engineer Marcus Hall said rainfall has made for slow progress on the third phase of the Tavis Road flood protection project this June — its $1 million pumping station. Work is being done by Weisz & Sons.

When finished, it will be able to pump water from inside a contained gate structure back into the Missouri River during flooding. River water will be held back and water inside can be pumped out. Three pumps are being installed, Hall said. A concrete structure will be built this summer to house the pumps and the pumps will be installed by next spring, Hall said

In 2012, two other portions of the project were completed. Tavis Road near the causeway was raised to the 20-foot protection level and a gate was installed. A channel leading up to the causeway also was dredged. Some $740,000 have been spent on the previous projects, Hall said.

“Anytime we get rain, it is unfortunate,” Hall said.

Waste water plant

The city of Mandan is taking extra steps for flood protection for its waste water treatment plant, said Jim Neubauer, city administrator.

Water line work will ensure that Mandan can move clean, treated water from the plant into the Missouri River when the river rises above 17 feet.

Swanberg Construction is the general contractor of a $1.23 million project.

The city is paying for the project with a $672,938 Energy Infrastructure Grant and borrowing $556,330. Neubauer said it will be completed later this summer.

Reach LeAnn Eckroth at 701-250-8264 or leann.eckroth@bismarcktribune.com.