The Interstate 25 South Gap Project is moving forward, the Colorado Department of Transportation announced June 29, after a yearlong analysis found the $350-million widening project won't have a significant environmental impact.
CDOT plans to widen a narrow 18-mile stretch of I-25 by one lane in each direction between Monument and Castle Rock. The new lanes will be toll lanes. The project also entails widening shoulders, replacing four bridges, building four wildlife underpasses, and improving lighting and signage.
Last November, voters approved two ballot measures that allotted money for the widening.