Pedestrians will not be required to pay a four-dollar toll to walk over the bridge between downtown and South Congress. So says a source at the City, person number three reached by telephone today (the trail started at 974-7180, went to 974-5634, and then to a mystery number). There was nobody live at Roadway Productions (441-9015). Two- and four-wheel traffic (and emergency vehicles), however, must defer to the Bat Fest. Capital Metro detours have been posted.