All lanes back open on I-12 at La. 447 All lanes back open on I-12 at La. 447 Advocate staff report Jan. 13, 2014 Comments All lanes are back open on La. 447 in Walker, where an accident had blocked eastbound traffic, The Louisiana Department of Transportation and Development announced on Twitter. Congestion from the incident still extends to Juban Road, DOTD tweeted at about 9:05 a.m.