Bunker Hill North Branch of the Chicago River Address or Nearest Intersection: N. Caldwell Ave. and N. Tonty Ave., Chicago, IL Directions : Enter Bunker Hill Forest Preserve off of Caldwell Ave., south of the Touhy Ave. and north of Devon Ave. Once in the forest preserve, take the drive to the first parking lot on your left. Continue to the southern end of parking lot. Walk the path down to river (there will be a bridge in front of you). Owner: Forest Preserve District of Cook County Habitat Description: Oak Savanna and woodlands. Access to water: Good access to the east of the bridge on the north side of the river. Amenities: Toilets available. Parking: Parking lot Capacity: 60 students