This project involved the design and engineering of a new bypass roadway (M-231) and the reconstruction of a segment of M-104 in western Michigan. The scope included complete plans, specifications, and estimates for both corridors. The M-231 segment introduced several challenges, as it was a new alignment requiring earthwork balancing, drainage design, utility coordination, and environmental permitting through MDEQ and NPDES. Although the corridor would initially operate as a two-lane, two-way road, it was designed to future freeway standards. For M-104, the design widened the existing two-lane roadway to include a center turn lane and appropriate auxiliary lanes.
Our firm served as the prime consultant for M-231, providing full geometric highway design in accordance with MDOT and FHWA standards. Additional responsibilities included utility impact analysis, guardrail upgrades, and safety reviews using crash data. Right-of-way plans and traffic staging were developed to support construction, and permanent signing and pavement marking plans were prepared using SignCAD and MDOT-compliant tools. Coordinating with local agencies and holding public meetings ensured alignment with stakeholder expectations.
Bridge and drainage design were also key components. Plans were prepared for a new structure over Leonard Street, and a full hydraulic study was completed using MDOT guidelines. Drainage design included enclosed storm systems, roadside ditches, detention ponds, and culverts. Environmental documentation, cost estimates, and a full construction plan set rounded out the deliverables.