(Franklin County, IN)--The Fairfield Causeway over Brookville Lake may have to be totally replaced. That’s what Franklin County leaders learned this week after a new INDOT inspection last week. The county was preparing for $3 million in repairs. But a new bridge would cost $10 million. One of the main problems, according to INDOT, is the pin and hangar system. Those types of bridges have failed in other parts of the country with no warning.