I suspect that the actual cost to rebuild the bridge will be far higher than that. Initial estimates of large public works projects are virtually always too low, and actual costs can easily be 5-10 times higher.
There is a great book about this phenomenon (and how to avoid it) by Brent Flyvbjerg called "How Big Things Get Done".
There is a great book about this phenomenon (and how to avoid it) by Brent Flyvbjerg called "How Big Things Get Done".