Section 117.463 - Lacombe Bayou(a) The draw of the US190 bridge, mile 6.8 at Lacombe, shall open on signal if at least 48 hours notice is given.(b) The draw of the Tammany Trace bridge, mile 5.2 at Lacombe, shall open on signal if at least 2 hours notice is given.USCG-2018-0953, 85 FR 45094 , July 27, 2020