Construction on I-69 is continuing across southwest Indiana.
The highway is already open from Evansville to Crane, and as work on the road moves through Greene and Monroe Counties woodlands and wetlands are being built to more than replace what is being taken. State authorities say that 75% of the land purchased for the highway is to replace woodlands and wet lands that are being taken for the road.
The idea is to minimize the impact on nature.
For every tree taken out by the highway another one has to be put in somewhere else.
The grand total for section 4 of the highway is one million trees.
The project also includes the purchase of caves that help protect 34,000 endangered Indiana Bats.
Approximately $30 million is being spent on preservation.