There's several pedestrian bridges. One at the entrance towards the nature center. The other ones are part of the trails
First there's the West Fork Bridge then the hurricane Bridge then the Boyd Bridge
The bridge across Trinity is located on the trail almost immediately if you use the entrance from 157. If you enter from Green Oaks you need to stay to the right and park in the last lot. The trail goes into the woods across a smaller bridge continue for about a mile and you will reach the Trinity bridge.
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