Illinois state agencies at odds over endangered species protections
By Juanpablo Ramirez-Franco
Published on April 27, 2026.
An ongoing dispute between two state agencies over state species protections is testing the resilience of the endangered species in Illinois. The Illinois Department of Natural Resources (IDNR) has been challenging the state Department of Transportation (IDOT) when it sought permits designed to protect endangered species during road, bridge and other transportation work. The disagreement was resolved after IDOT ignored state experts' recommendations to pursue permits designed for the accidental harm of a protected species during construction. The conflict was revealed in internal state documents obtained by WBEZ and Grist. The rift between IDOT and IDNR shows that state-funded transportation projects may have overridden Illinois’ Endangered Species Protection Act in 11 cases in the past year. In response to IDOT’s handling of species protections, IDNR ended a decade-old agreement with the agency last fall that allowed IDOT to fast track through environmental reviews.
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