Just read a story in the local paper about a new train line (Greeenbush) that will start in a few months. The line is about 17 miles long, just south of Boston.
They installed 39 "turtle tunnels" underneath the tracks at various locations to let the turtles roam freely ... I guess its hard for a turtle to scale a 6" tall rail.
Cost for the turtle tunnels was $300,000.00
The was no mention of anything spent on frogs.