Iowa DOT News Release

Iowa DOT seeks bids for Iowa 175/Decatur bridge project #MoRiver

Posted on: September 30, 2011

AMES, Iowa – Sept. 30, 2011 – The Iowa Department of Transportation (DOT) is soliciting bids from qualified contractors for work associated with the Iowa 175/Decatur (Nebraska) bridge project. Bids are due Wednesday, Oct. 5. 

Interested contractors can receive complete details by visiting Bid Express or; the bid order number is 301. To obtain a bid proposal, the plan and any other necessary bid documents, contact the Iowa DOT’s Office of Contracts at 515-239-1414.

The Iowa DOT is the lead agency on the project, which also involves cooperation with the Nebraska Department of Roads and Burt County (Nebraska) Bridge Commission. 

The bridge over the Missouri River near Decatur, Neb., and west of Onawa, Iowa, has been closed since June 27 due to the Missouri River flooding. The flood waters scoured out a large hole around the bridge piers and east abutment, and caused loss of embankment on the Iowa side of the river, which supports the Iowa 175 roadway approach to the bridge.

Construction work involves a variety of items and will be performed in multiple phases. The first phase involves filling the hole to stabilize the bridge and embankment so that traffic can be restored on the road/bridge.

Additional work will be performed while the road/bridge are open to traffic, including construction of a weir (a small overflow dam) south of the bridge and dike north of the bridge. These structures are intended to alter the flow characteristics of the river to prevent future flood damage.

Due to the criticality of this roadway to northwest Iowa and the multistate region, and importance of economic recovery following the flooding, the Iowa DOT has included an incentive/disincentive provision in the bid proposal. The goal is to expedite repairs and get the roadway reopened as quickly as possible.


Media contact:  Dena Gray-Fisher, 515-239-1922 or

Iowa highway in the evening