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The list of sustainable elements on this project runs long and includes a commitment to water quality, energy savings and mitigation of the construction footprint by using environmentally friendly building materials.

“There are a lot of benefi ts to the end- user in many different applications,” said Jon Chiglo, Mn/DOT’s project manager.

And these elements were implemented

quickly: Mn/DOT executed a contract that called for completion of the new bridge in 15 months. The new $234 million bridge includes 10 lanes for traffi c, reconstructed interchange ramps and room to accommodate a future light-rail line. The project wrapped up in just 339 days, or three months ahead of schedule.

“This project was a success because of a strong commitment to cooperation between Mn/DOT and the builder, Flatiron-Manson,”

Crews focused on sustainable elements, including water quality, energy use and environmentally friendly materials.

The bridge employs 323 “smart bridge” sensors throughout the structure to collect data on its performance.

“Sensors provide valuable feedback that will aid in infrastructure maintenance and design sustainability for future bridges,” said Linda Figg, president of FIGG. “As part of the anti- icing system, when temperature, humidity and wind speeds reach specifi ed levels, sensors located on the bridge trigger the automated release of the anti-icing fl uid.”

The new I-35W bridge was fi nished 98 days ahead of schedule.

24 | Green & Clean

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