Demolition started a little after 9 a.m. on the end truss of the Fairfax bridge on U.S. 69 Highway.
The Missouri Department of Transportation started with demolition of the end truss on the Kansas side at 9 a.m., then the demolition was scheduled on the other end this morning.
According to the Kansas Department of Transportation, this demolition is making way for a new $79 million replacement bridge.
North and southbound U.S. 69 was closed from 8 a.m. to 4 p.m. because of the blast, KDOT said.
In this project, the Platte Purchase Bridge and Fairfax Bridge will be demolished, with a new single bridge built, according to KDOT officials. The new bridge will have multiple lanes and bike-pedestrian access. It is expected to open in December 2016.