The Iowa Department of Transportation has implemented new safety measures at the U.S. 218/Highway 34 interchange in Mount Pleasant, installing No Left Turn signs and placing yellow and white road barriers at Exit 42A. The change is designed to prevent drivers from crossing over Highway 34 and making a left turn—or westbound turn—into Mount Pleasant. 
For years, some motorists have used the 42A ramp to turn left despite signage and roadway markings prohibiting the maneuver. That maneuver has contributed to numerous crashes, including a fatal motorcycle accident this past summer, in which a driver attempted to cross oncoming traffic to make a left turn, causing a deadly collision.
The new barriers and signage are meant to physically block that left-turn movement, forcing drivers to use the safer, designated route.
Drivers should be aware:
Exit 42A no longer allows any left turn toward Mount Pleasant. Motorists traveling north on U.S. 218 who need to head west on Highway 34 will now be required to continue to Exit 42B and navigate the roundabout to make the proper connection into Mount Pleasant.
IDOT officials emphasize the change is permanent and encourage all drivers to stay alert, follow posted signs, and adjust their routes accordingly to ensure safer travel through the interchange.