Visitors traveling to Ha Ha Tonka State Park need to be aware a large highway project is starting Monday, March 3.
In Camden County, Route D through Ha Ha Tonka State Park will undergo various phases of construction continuing through June.
Construction will close one lane of Route D between 6 a.m. and 6 p.m. Monday through Friday.
Crews will construct shoulders on the first 4.75 miles south of U.S. Route 54 and shift the road away from the historic post office.
