Directions:  Go back out to the Allegheny River Boulevard/Washington Boulevard intersection and turn right. Stay in the right hand lane and cross the Highland Park Bridge. Get in the left hand lane and stay left to follow the signs for PA 28 South "Pittsburgh". Follow PA 28 south to the 31st Street Bridge and turn left onto the bridge. Be careful, do not cross the bridge. Instead turn right and then immediately left onto Herr's Island. Housing is being developed here, but the upriver end by the tennis courts has a walking trail and a nice river viewing area at the island tip. (N 40.4683, W 79.9749) Walking Alternative - Park in the tennis court parking lot on Herr's Island. Take the Heritage Trail toward Pittsburgh. Cross one of the 3 Sister Bridges on 6th, 7th, or 9th Street and follow the Allegheny Wharf to Point State Park. When the stadium construction is complete you can cross the stadium walkway to Clemente Park, then return on the Three Rivers Heritage Trail to Herr's Island. This loop is approximately 5 miles.