MTJ Roundabout Engineering provided peer review, capacity analysis, and final horizontal geometrics as a sub-consultant to the WisDOT-led project team. MTJ provided oversight through 30-60-90% design. Plans included guidance on vertical profile control, pavement markings, signing, landscaping, and lighting.

MTJ Roundabout Engineering’s Mark Johnson was the designer/reviewer responsible for operational analysis and final horizontal geometrics for this roundabout serving a major interstate. This challenging roundabout project includes two 6-leg interchange ramp terminal roundabouts.

The City of Lake St. Louis conducted a concept study to improve the function of the two closely spaced intersections at Veterans Memorial Parkway and the eastbound ramps of I-70 on Lake St. Louis Blvd. This analysis included evaluating roundabout options for addressing the closely spaced intersections that were experiencing congestion and safety issues.

MTJ Roundabout Engineering provided a preliminary roundabout design, capacity analysis, and peer review for this interchange ramp terminal as part of the Trunk Road Extension project.

MTJ Roundabout Engineering provided the roundabout analysis, design, peer review for 30/60/90% plans, and public outreach support to WisDOT for this project. MTJ’s extensive roundabout design experience played a pivotal role in achieving the correct design solution and acceptance of the unique series of roundabouts.

This series of roundabouts accommodates traffic exiting from a major highway outside of the state capitol Madison. MTJ was responsible for horizontal design, public outreach, and signing and marking for this intersection.

MTJ provided the roundabout operational analysis, final horizontal design, and design oversight of pavement markings (including field layout assistance) and signage for this project as a member of the consulting team led by Omni-Means. The roundabouts are primary access to Carmel, Pebble Beach, Pacific Grove, Monterey, and the Community Hospital (CHOMP).

The Interstate 5 and Deschutes Road interchange is at the southern tip of Anderson and serves a future-planned retail, commercial, industrial, and residential area. In response to large-scale development proposals, the MTJ/Omni-Means team provided the feasibility analysis and final construction plans for this significant entry to the community.

The MTJ/Omni-Means team developed a cost-effective and timely solution that included two closely spaced roundabouts and a new freeway on-ramp to replace the existing congested signalized intersection. This solution preserves the existing overcrossing and eliminates existing congestion while providing increased capacity of the interchange to accommodate future growth.

MTJ Roundabout Engineering’s Mark Johnson, PE, was the designer/reviewer responsible for capacity analysis and final horizontal geometrics for this roundabout serving a major interstate.

MTJ’s roundabout analysis and design work as part of the Lounsbury project team supported a Preliminary Engineering Report (PEF) to re-evaluate and update a ‘Major Investment Study’ (MIS) and an ‘Environmental Assessment’ (EA) to determine the preferred interchange type. MTJ provided this study's roundabout-specific design and analysis component, including seven different interchange forms.

While with the WIDOT Mark was the lead engineer working in a collaborative effort with The City of Madison, Dane County Highway Department to find solutions to existing traffic congestion and pedestrian and bicycle deficiencies associated with the Highway 30/Thompson Drive (off-ramp) and the Thompson Drive/Commercial Avenue-County Trunk Highway T intersection (on-ramp).

MTJ Roundabout Engineering’s Mark Johnson, serving as a sub-consultant to R.A. Smith National, provided the capacity analysis, final horizontal designs, and peer review for this complex system of four roundabouts that feature single-lane to three-lane entries.

MTJ Roundabout Engineering’s Mark Johnson, PE, as a subcontractor to the prime site civil firm, provided expert roundabout planning, analysis, feasibility, design, and peer review for this big-box retail development project located in Sheboygan, WI.

MTJ Roundabout Engineering provided the roundabout analysis, design, peer review for 30/60/90% plans, and public outreach support to WisDOT as a sub consultant to Ayres & Associates, for this series of three roundabouts.