EISENHOWER TUNNEL — Projects that would ease fist-pounding traffic delays on the Interstate 70 mountain corridor from Denver to the Western Slope are backing up like cars on a Saturday morning during ski season. And with millions upon millions of dollars in projects awaiting voter approval, Colorado Department of Transportation officials say, those hours-long waits to hit the slopes amid a Denver metro population boom are likely to get worse before they get better. “You always get what you pay for,” CDOT executive director Shailen Bhatt said Wednesday morning as traffic barreled by just outside the tunnel in Clear Creek County.