IL Rte. 89 bridge over the Illinois River at Spring Valley

Hutchison Engineering, Inc. was selected by Illinois Department of Transportation, District #3 to provide engineering services and to assist the Resident Engineer in construction oversight during the removal and replacement of the existing IL Route 89 bridge over the Illinois River at Spring Valley. The Illinois Valley Veterans Memorial Bridge Project was a $41.5 million project that consisted of the removal and replacement of the extremely narrow structure. The new multi-span structure built on an alignment adjacent to the existing structure has a 40’ clear width. One of the major challenges of this project was poor soil conditions and the expectations of significant settlement. This required the use of innovative wick drains and surcharges to be applied to the new embankment. In order to keep the existing embankment from settling, sheet piling in excess of 100’ were driven to create a slip plane, creating a challenge to the contractor. Despite the challenges this project was completed on time and on budget.

Construction Inspection Projects