SIGNING A BRIDGE A Bridge Ahead cautionary sign on each approach to the bridge should be installed at a distance from the bridge that allows the snowmobiler to react to the presence of the bridge and slow FIGURE 9 to a speed acceptable to the width and surface of the bridge. A bridge that does not narrow the trail may be marked with a Slow sign in lieu of a Bridge Ahead sign. 175-500 ft. (see pg. 6) 175-500 ft. (see pg. 6) Hazard markers should be installed to mark each corner of the bridge. FIGURE 10 - NARROW BRIDGE 175-500 ft. (see pg. 6) 175-500 ft. (see pg. 6) 15 SLOW CORRIDOR BRIDGE AHEAD CORRIDOR SLOW BRIDGE AHEAD