From Top To Bottom: Top-down construction is getting the thumbs-up on segmental flyover bridges.

Bd&e, Issue 65, December 2011

From Top To Bottom: Top-down construction is getting the thumbs-up on segmental flyover bridges in the USA. Craig Finley reports. 

While the city of Miami goes about its typical day, a bright yellow monster sits idle, high above one of South Florida’s busiest roadway networks, waiting for its work to begin. As midnight nears, the 140m·long, 431t launching gantry comes alive, preparing to continue the only task it was built to perform – erecting four segmental bridges in the heart of Miami.

At the end of September, the first of 783 concrete segments was erected for the four segmental bridges that form the centrepiece of the new US$559 million Palmetto/Dolphin Expressway Interchange. This milestone marked the beginning of a 36-month construction process that will result in the reconfiguration of the roadway where SR826 – the Palmetto Expressway – meets SR836- the Dolphin Expressway. Read more…

Leave a Reply

Note: Your email address will not be published. Required fields are marked *