INDOT and KYTC announced in September 2010, that the long-anticipated replacement of the Madison-Milton Bridge will be completed years ahead of schedule and with significantly less disruption than originally estimated.

The “design-build” project was awarded to Walsh Construction Company of La Porte, Ind. Walsh plans to close the bridge for only 10 days during construction rather than an anticipated year-long closure. 

Walsh is teaming up with design firms Buckland & Taylor Ltd. and Burgess & Niple Engineers of Columbus, Ohio, and is expected to submit a project schedule in the coming months. Groundbreaking for the project is scheduled for November 30.

The team will use an innovative  construction method called “truss sliding” to ”slide” the 3,181-foot-long truss into place along steel rails and plates. 

what is design build?

The “design-build” method is used to save time by overlapping the design phase and construction phase of a project. While the process moves at a faster pace, it does not compromise quality and safety. Inspectors will monitor every step of construction.

US 421 bridge info

The current steel truss bridge, built in 1929, is 3,181 feet long; its longest span is 727 feet. It is extremely narrow with two 10-foot lanes and no shoulders or sidewalk.

The new truss bridge, which will look similar to the existing. The road deck will be widened to 40 feet and will include two 12-foot lanes, 8-foot shoulders and a 5-foot side walk cantilevered to the downstream side of the trusses. Construction of new roads approaching the bridge is not part of the current project, but the new bridge design will be compatible with future approach work, which remains an objective of KYTC and INDOT.


Can't see the video? Please download the latest version of Adobe Flash Player.
Can't see the video? Please download the latest version of Adobe Flash Player.

image gallery

prev next