• © 2024 McCarthy Improvement Company
  • Office Hours: Mon-Fri 8am-4:30pm

Sterling Highway 40

Project Video

Project Description

As the second of its kind in Sterling, the highway intersection of Science Ridge Road and Illinois Route 40 was transformed into a roundabout by the McCarthy Improvement team.

This intersection was involved in 20 accidents from 2015 to 2020. In 2021, the IDOT installed rumble strips and converted the intersection to a four-way stop. It was later determined that a roundabout was the best option for the road since its design slows down traffic and reduces the impact of crashes. According to the Illinois DOT, roundabouts can reduce fatal crashes by 90%, and reduce injury crashes by 76%.

Project Details:

  • Length: 1 mile (lane miles)
  • 5,000 CY of concrete
  • 15,000 TN of rock

A real push for a roundabout came after tragedy struck a Sterling family. Read about how this father was determined to make the intersection safer. Click here to read.  


Contact Us

Have an inquiry?
Contact us.