Colorado 2025 Session Dates: 01/08/2025 – 05/07/2025 Click bill number to view bill textClick summary to view legislation detail Bill Bill# SUMMARY LAST ACTION NOTES SB 162 Establishes comprehensive railroad safety requirements, focusing on enhancing rail safety oversight, emergency response, and environmental protection. 06/04/2025 Signed by Governor. Effective 7/1/2025. SB 320 Increases the amount of the bridge and tunnel impact fee imposed per gallon of special fuel. 06/03/2025 Signed by Governor. Effective 7/1/2025. Bill Bill# SUMMARY LAST ACTION NOTES