The Grójec Bypass project included the upgrade of the existing national road to the expressway parameters. Work began in November 2006 and ended in September 2008. As part of the consortium, Mosty Łódź made some of the engineering structures located on the bypass.

8 old structures were demolished and 15 new ones were built under the project, including:

• 2 interchange structures
• 5 structures over the road
• 5 structures along the road
• 3 footbridges

Project challenge: n the course of the work, Mosty Łódź used 5,500 m3 of concrete, 750 tonnes of reinforcing steel, 113 tonnes of steel elements, 112 of prefabricated T-beams, in addition to other materials.