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[INDOT] Milton-Madison Bridge Slide Scheduled Week of April 6; Closure to Remain Until Mid-April
Start Date: 3/26/2014Start Time: 12:00 AM
End Date: 3/26/2014
Entry Description

Bridge Slide Scheduled Week of April 6; Closure to Remain Until Mid-April

(Posted March 26, 2014) Preparation work continues for the slide of the Milton-Madison Bridge, which is tentatively scheduled to take place the week of April 6. Once the bridge has been moved onto its permanent piers, it will take approximately a week to complete inspections, road connections to the bridge and other work. As a result, the bridge will remain closed until mid-April.

Additional restraints are being installed and the sliding harnesses modified as part of the prep work. This additional work follows a four-step process:  The measures are designed off site, the designs are reviewed by the states, the materials are fabricated and/or delivered to the site, and finally, they are installed by bridge crews.

Each of the four steps has its own timeline, and one must be completed before the next. “We’re working diligently and carefully to move the bridge and get it reopened safely and in a timely manner,” said Kevin Hetrick, project manager for the Indiana Department of Transportation (INDOT).

Structural engineers will continue to monitor and inspect the bridge throughout the process to ensure it is safe through all phases of work. Meanwhile, Walsh Construction crews continue to work as they are able on other tasks that must be completed before the bridge reopens to traffic, such as installing the remaining concrete railings and deck for the Indiana and Kentucky approaches to the bridge.

Over the weekend, construction crews completed the job of jacking up the bridge and replacing a steel bearing that dislodged March 11.  The southeast corner of the bridge was raised nearly one foot in order to slide the bearing into place. The jacks were then removed, placing the bridge load back on its bearings. 

On March 13, a 100-foot concrete approach bridge section was slid laterally into place over the Milton, Ky., riverbank. This was a precursor of the upcoming main truss slide because it involved the same equipment and process. Time-lapse video is available on the project website’s News Center page: click here to view time-lapse video.

The nearly half-mile steel truss will be slid laterally 55 feet onto refurbished permanent piers (see video below). While there have been reportedly more than 30 bridge slides in the U.S., the Milton-Madison Bridge will be the longest steel truss (2,428 feet) in North America to be slid laterally into place.

While U.S. 421 remains closed across the Ohio River between Madison, Ind., and Milton, Ky., detours will remain in effect. Signage is detouring traffic to the Markland Locks and Dam Bridge, connecting Kentucky Route 1039 and Indiana State Road 101, 26 miles upstream, or the I-65 Kennedy Bridge in Louisville, 46 miles downstream.

A ferry has been providing transportation across the river for emergency vehicles, such as an ambulance. Residents are asked to keep Ferry Street and the boat ramps clear on both sides of the river.

As updates become available, they will be posted on the project’s website, miltonmadisonbridge.com, and via Twitter at twitter.com/mmbridgeproject. Regular updates will also be provided to local news media.

The Milton-Madison Bridge Project is a joint effort between the Indiana Department of Transportation and Kentucky Transportation Cabinet. The new steel truss bridge is 2,428 feet long and 40 feet wide with two 12-foot lanes and eight-foot shoulders – twice as wide as the old bridge.

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