Construction work is on schedule as 60 people swarm Highway 141 and Ladue Road. They are improving the highway and raising the road above flood level. The $55 million project is funded mostly with federal stimulus money. Work is to be completed by the summer of 2012. Crews will pave a section of 141 with what they call "smog eating concrete."

The concrete contains an active ingredient that captures pollution and U.V. light from the sun breaks it down into harmless chemicals. MODOT officials say tests in Italy show there's been a 40 percent reduction in pollution. They also say St. Louis is the first place in the country to use the "smog eating concrete."