There's a takeout upstream of the bridge you can use but you'll have to haul your gear up from the river - good if you haven't gotten enough exercise. If you had to deal with headwinds or want to do it the easy way, you'll want to use the concrete ramp downstream of the bridge and just back your trailer down to the water.
Nothing in the world is more yielding and gentle than water. Yet it has no equal for conquering the resistant and tough. The flexible can overcome the unbending; the soft can overcome the hard. - Lao Tse