CDOT says dry winter and Broncos’ winning streak may have contributed to 3% drop in traffic at I-70 tunnels

CDOT says dry winter and Broncos’ winning streak may have contributed to 3% drop in traffic at I-70 tunnels

Traffic on the Interstate 70 mountain corridor dropped nearly 3% in 2025 compared to 2024, according to Colorado Department of Transportation data. Traffic counts show just less than 12.6 million vehicles drove through the Eisenhower-Johnson Memorial Tunnels in 2025, one of the lowest totals since 2020, when the COVID-19 pandemic interrupted traffic patterns nationwide. “Year-over-year I-70 traffic volumes fluctuate based on several variables, s…