Two Missouri 291 bridge projects at far ends of Eastern Jackson County will cause driver delays for the next few months.

One is at the Jackson-Clay county line, north of Missouri 210. The other is at a high-traffic intersection in Lee’s Summit. Motorists are reminded to slow down in work zones.

Starting Monday, crews will close the left lanes of northbound and southbound M-291 for work on the bridge immediately south of Old 210. Crews will install crossovers in the median.

Traffic – one lane each way – shifts to the southbound bridge during the first weekend in March. The other bridge is being replaced. That should be done by mid-June, but the Missouri Department of Transportation points out that weather can cause delays.

MoDOT also has a big project at the more western of the two intersections of M-291 and U.S. 50 in Lee’s Summit. That’s the intersection, west of the railroad bridge, where M-291 runs south from 50 toward Harrisonville. There’s a water park at that corner.

That busy overpass is being converted to a diverging diamond. In the meantime, some driver headaches:

• Starting today, northbound traffic on 291 is being switched to new pavement and then back across the current bridge.

• Southbound traffic is shifted next week.

• The ramp from southbound 291 (Jefferson Street) to eastbound 50 will be closed for several months.

MoDOT says the eventual result will be an intersection capable of handling far more traffic.