Bridges carrying I-70 eastbound and westbound traffic were replaced by the slide-in-bridge construction method. The $5.6 million project was constructed by Walsh Construction Company. Benefits to using the slide-in-bridge construction method are accelerated construction scheduling, increased safety, reduced traffic maintenance costs, minimized traffic impacts, and improved construction quality.
The new bridge was temporarily constructed in the median while traffic was allowed to flow unrestricted in both the eastbound and westbound directions. Temporary crossovers were constructed to divert traffic off one of the two bridges for bridge replacement.
Traffic was diverted off the westbound bridge on September 9, 2017; the old bridge was demolished that day and the new bridge was slid into place the following day. Traffic was permitted to cross the new westbound bridge on September 17—just a little over a week later. This is significantly less traffic impact time than with the traditional construction method, which could affect traffic for months.
This video was assembled from cameras located on the construction site for the period from May 2017 to September 2017.
Cite this work
Researchers should cite this work as follows:
- Bunnell, W. A., Bullock, D. M., Nantung, T., Wells, T., Tipton, F. (2018). I-70 Bridge Slide Over State Road 121 in Richmond, Indiana. Purdue University Research Repository. doi:10.4231/R73776X7