The Boone County Commission will formalize its commitment to provide $2 million for a new Interstate 70 bridge near Rocheport on Thursday.

The commission had the first reading Tuesday of an agreement with the Missouri Department of Transportation to provide the cash and to allocate it in the budget for 2020. MoDOT recently won an $81.2 million federal grant to support the project, estimated to cost $240 million.

“Part of the packaging of that grant application included commitments from local governments – Boone County, the city of Columbia, Boonville and Cooper County – to allocate funds toward that project,” Stan Shawver, director of resource management, said during Tuesday’s commission meeting.

Columbia has also promised $2 million, with Cooper County and Boonville adding $100,000 each.

MoDOT is allocating $105.2 million from state highway funds but is about $50 million short of securing all the financing needed to meet the estimated cost.

Local governments and legislators have pushed for the project, because a repair job planned for the bridge would only extend its life about 10 years and cause massive backups as traffic is reduced to single lane in each direction.

“We are very fortunate that this has gotten to this point, and I am confident it will get all the way through the system and that MoDOT will find whatever additional money they need to fund construction of a new bridge,” Presiding Commissioner Dan Atwill said.