Älmsta and Bagghus bridges Light signals at bridge Iso R Bridge closed. Iso R + Iso W Signal from vessel acknowledged. Iso R + F W Bridge is being opened. Be prepared to proceed. Iso G Bridge is open. Proceed. F R + F W Bridge can not be opened. Älmstabron bridge Vertical clearance at MSL (no safety margin) = 4,5 m Bagghusbron bridge Vertical clearance at MSL (no safety margin) = 6,2 m Contact information, visit www.sjofartsverket.se