The I-69 Taylor Ridge to Plummer Creek project is a $109 million design-build contract with the Indiana Department of Transportation to construct a 2.68 mile section of I-69. The project, which consists of all new alignment through a remote and environmentally sensitive area, required a pair of bridges with an average height of 60′ to be constructed over the Black Ankle Valley. Extensive ground improvements were completed ranging from high strength fabrics, to wick drains, to staged embankments with chemically modified soils to allow for fills in excess of 100 feet to be made. Millstone Weber’s portion of this project included constructing two Structures approximately 2,000 feet long over the Black Ankle Creek and adjacent wetlands. The original budget for this portion of new I-69 through Central Indiana, south of Bloomington, was $26.2 Million. The final contract amount was $29.7 Million.
In all, over 20,000 cubic yards of structural concrete was poured to complete the 2,000 foot long structures, with heights over 60 feet.. The footings and piers were defined as mass concrete consisting of approximately 12,000 cubic yards. Mass concrete on this project was defined as any concrete pour with the least dimension greater than 5.0 feet.
Access to the project was limited to a 4.5-mile gravel county road as contracts on each end of the project were not completed. All materials for the project were delivered on the this one county road including 104 concrete beams. The concrete beams were a 153 ft. long and weighed in at 196,000 LBS. The contract was the last one to be awarded on the corridor and was the first one completed.