Under the MDOT Locally-Administered, Federal-Aid program, Ingham County contracted with Bergmann Associates in 2006 to perform the preliminary-through final design for the replacement of the existing 90-foot long two span four lane steel beam bridge over the Red Cedar River. The existing bridge was deemed functionally obsolete and structurally deficient.
The replacement bridge consists of a 117-foot, single span, adjacent prestressed concrete box beam structure founded on deep H-pile supported wall type abutments. The new bridge has been widened to allow both the NB left turn lane and the NB right turn lane that currently existing north of the bridge to be extended over the Red Cedar River. The project included a 2 foot rise in the Hagadorn Road profile at the bridge to improve the vertical alignment of the road and provide additional clearance below the north abutment for a future pathway. The project length is approximately 1100' which includes horizontal realignment of Hagadorn Road to minimize impacts to neighboring private property due to the bridge widening. Construction was completed during a full detour of vehicular traffic while maintaining pedestrian traffic on the existing pedestrian bridge just downstream of Hagadorn Rd.
Bergmann also provided construction phase engineering services in the Summer of 2007. Shop drawing review included: bearings, railing, and prestressed box beams