D.C.’s planned concept to redesign a stretch of Connecticut Avenue in Northwest includes dedicated left-turn lanes and pedestrian upgrades but will move forward without bike lanes, capping months of tension between cyclists, residents, lawmakers and transportation officials. (Courtesy DDOT) Courtesy DDOT (Courtesy DDOT) Courtesy DDOT (Courtesy DDOT) Courtesy DDOT (Courtesy DDOT) Courtesy DDOT (Courtesy DDOT)…