$4.6M bridge for horses in Mass.

The Bluehills reservation in Randolf Massachusetts is split by the northernmost portion of the I-24.
There was a bridge across the freeway for horses and hikers, but it was unreliable and unrepairable.
The original estimate of $2M went up to $4.6M and stimulus funds are paying for it.
If you find the bridge on Google Maps, you will see the new construction and you will also see that there is NO ROAD. It is just a trail!
$4.6M for a horse bridge?

I guess they don't have a casino.