TITLE 33--NAVIGATION AND NAVIGABLE WATERS CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY PART 117--DRAWBRIDGE OPERATION REGULATIONS--Table of Contents Subpart B--Specific Requirements Sec. 117.457 Houston River. The draw of the Kansas City Southern Railroad bridge, mile 5.2 near Lake Charles, shall open on signal if at least 24 hours notice is given.