The Science Building Complex is located to the west of Lovejoy Library and contains the classrooms, labs, and offices of the departments of Biological Sciences, Chemistry, Environmental Sciences, Mathematics and Statistics, and Physics as well as the SIUE Center for Science, Technology, Engineering and Mathematics (STEM) Research, Education and Outreach. The Science Lab Building East (originally the Science Building) opened in 1966. Construction of the new Science Lab Building West was begun in late 2009, part of a $72 million project to build it and completely renovate the existing building. The new building opened for use in the Fall of 2013, and the gutting and renovation of the old building is underway with completion originally scheduled for the Fal of 2016. Renovation work on Science Building East was halted in 2015 due to the Illinois budget crisis, but SIUE "forward funded" the work on the two large lecture halls, which were already back in use when work resumed. Science Lab Building West was rededicated in September 2018, the completion late but well under budget.