Districts Impacted
Project Summary
Creating an easier, safer, and smoother I-70 Interchange System.
The I-70 Cave Springs to Fairgrounds project is a Design-Build project that will make improvements to address the connectivity, safety and congestion problems that have impacted this region for decades.
Project Milestones
I-70 Planning and Environmental Linkages (PEL) Study from Wentzville to Mississippi River completed.
I-70 from Cave Springs to Fairgrounds identified as a regional priority.
MoDOT funds the project in the 2020-2024 Statewide Transportation Improvement Program (STIP).
Project designated as Design-Build and project team formed.
Public engagement period.
Project awarded to Best Value Proposer.
Lanes narrowed in both directions of Interstate 70 at the Cave Springs and Zumbehl interchanges.
Construction begins on new bridges at Zumbehl over I-70 and at Cave Springs over I-70 and Veterans Memorial Parkway.
Lanes narrowed and shifted on Cave Springs over I-70.
Traffic will be shifted to the new bridges at Zumbehl over I-70 and at Cave Springs over Veterans Memorial Parkway. Current Cave Springs and Zumbehl bridges will be demolished.
Construction begins on new North Outer Road between Fairgrounds and Route 94.
Construction begins at Route 94.
Interchange work complete.
North Outer Road work complete.
Connectivity
The outer roads in the area are disconnected which sends local traffic onto the interstate or other local streets. Improving connectivity in the area would make travel more natural, reduce congestion and use the available space wisely. This would create an ease of access for residential and commercial properties.
Safety
Delays cause traffic to back up onto I-70, creating a serious risk to safety. The interchanges have a higher than average crash rate. Between 2013 and 2017 the average crash rate in the area was more than 40% above the statewide average rate.
Efficiency
The Cave Springs and Zumbehl interchanges often experience traffic jams making it tough for traffic to flow through the area. During the morning rush, vehicles crossing the interchange average a speed of 18 mph on Zumbehl Road and 7 mph on Cave Springs.
Project Goals
- Improve connectivity for the local community while maximizing safety and efficiency of the transportation network within the program budget of $62 million.
- Provide a durable and maintainable transportation infrastructure allowing for future expansion.
- Minimize impacts to the traveling public during construction while safely delivering the project by June 28, 2024.
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Deliver the project using a diverse workforce.
- Disadvantaged Business Enterprise Goals (DBE)
- 14% for Construction Activities
- 20% for Professional Service Activities
- Federal Workforce Diversity Goals
- 14.7% Minority
- 6.9% Female
What if I have questions?
Andy Tuerck, P.E.
Title
Area Engineer, St. Charles County
Contact Info
(314) 453-5046
Email: andrew.tuerck@modot.mo.gov
(314) 453-5046
Email: andrew.tuerck@modot.mo.gov
Stacey Smith, P.E.
Title
Project Director for Procurement and Design
Department
St. Louis District
Contact Info
314-453-5084
Anastasia.Smith@modot.mo.gov
314-453-5084
Anastasia.Smith@modot.mo.gov
