First section of concrete to be poured on new milton-madison bridge
Pour paves the way for eventual traffic switch to new span
Louisville, Ky. (April 8, 2013) – The first concrete pour for the road deck of the new Milton-Madison Bridge Project is scheduled to take place this week, weather permitting. The pour paves the way for switching traffic to the new span on temporary piers.
Five-thousand tons of concrete will be used to pave the 2,400-foot-long steel truss bridge. The bridge deck will be poured in three 800-foot sections. The first section, on the Milton side of the bridge, is expected to be poured this week. Subsequent pours are expected in the coming weeks. Workers will pour 60–80 feet of concrete deck per hour, starting early in the morning.
Once the concrete deck is complete in late spring, preparations will begin for switching traffic from the existing bridge to the new span on temporary piers. Drivers will access the new traffic pattern using the recently completed approaches. Traffic will be diverted to the new bridge by way of a short transition span from the approach to the bridge.
Once traffic is diverted to the new span on temporary piers, workers will begin demolishing the steel truss of the old bridge. Extra care will be taken to protect the existing piers which are being strengthened and reused. During the demolition, crews will be careful not to disturb a pair of peregrine falcons and their chicks in a nesting box on one of the piers.
Walsh Construction Company’s innovative multistep method of replacing the U.S. 421 bridge – which connects Milton, Ky., with Madison, Ind. – has allowed the bridge to remain open during construction, avoiding the originally expected year-long closure. The bridge, which is scheduled to open to traffic later this summer, will be closed for about a week while the slide and approach connections are completed.
The Milton-Madison Bridge Project – a joint effort between the INDOT and the Kentucky Transportation Cabinet – has received numerous awards. It was named one of the top 10 bridge projects in the country by Roads & Bridges Magazine, received a 2012 Best of What’s New Award from Popular Science magazine and received several state and national engineering awards for innovation. For more information, visit www.MiltonMadisonBridge.com or follow the project on Twitter.