Section 117.955 - Buffalo Bayou(a) The draw of the Houston Belt and Terminal railroad bridge, mile 1.2 at Houston, and all drawbridges downstream of it, shall open on signal if at least 24 hours notice if given.(b) The draw of the Union Pacific Rail Road Bridge, mile 3.1, need not be opened to the passage of vessels.CGD-8-89-11, 55 FR 2066, Jan. 22, 1990, as amended by CGD08-98-066, 63 FR 55030, Oct. 14, 1998; USCG-2011-0100, 76 FR 16296 , Mar. 23, 2011