I-75 & M-46 in Saginaw
- Total Project Investment: $62 million
- Location: Saginaw County, MI
This $62 million, multi-year, design-build project involved 2.4 miles of reconstruction and widening on I-75, reconstruction of M-46 and the I-75/M-46 interchange, and replacing structures at M-46 over I-75 and at I-75 over the LSRC/CSX railroad in Saginaw County.
During the design phase, the C.A. Hull/Fishbeck team was able to significantly change and develop a new type of interchange from the original RID design of a Partial Cloverleaf to an interchange that included a roundabout at either side of the freeway. This change allowed the team to move the structure to the south and avoid conflict with utilities on the existing structure. Early involvement with construction staff was critical in the success of the project throughout this design phase.
Maintaining traffic while building the new M-46 roadway was challenging. Extensive MOT plans were developed prior to construction. The C.A. Hull team designed and constructed an additional slip ramp from M-46 to northbound I-75 in order to alleviate traffic congestion.