The Colorado Dept. of Transportation (CDOT) maintains and constructs the state's highway system. We also issue oversize/overweight/overlength permits. CDOT is not a regulatory or enforcement agency. More information on the department can be found at www.dot.state.co.us. Road/weather conditions can be found at www.cotrip.org. The Colorado Dept. of Transportation (CDOT) maintains and constructs the state's highway system. We also issue oversize/overweight/overlength permits. CDOT is not a regulatory or enforcement agency. More information on the department can be found at www.dot.state.co.us. Road/weather conditions can be found at www.cotrip.org.