Task: Question Answering
Input (English): Passage: Initially called "the bridge to nowhere", the Admiral Clarey Bridge was instrumental in Senator Daniel Inouye's "rebirth" of Ford Island and enabled over $500 million in development with special legislation (2814 US Code). It connected 45 families and 3,000 civilian workers to Kamehameha Highway, and visitor access enabled construction of the $50 million 16-acre (6.5 ha) Pacific Aviation Museum. Plans included 500 homes for Navy personnel, a child-development center and a Navy lodge.In planning the island's development, the Navy considered its operational needs and the island's historic value. However, the National Trust for Historic Preservation considered the Navy's communication style more directive rather than collaborative, restricting the NTHP's ability to share their concerns, and in 2001 designated Ford Island one of its 11 most-endangered sites. Although the Navy's plans included preserving important hangars, the control tower and seaplane ramps, they failed to protect the existing runway and 1920s housing and did not address preserving bullet holes on the seaplane ramps.  As hoped by the Trust, after the designation the Navy agreed to delay development of some of these items until an agreement could be reached.To accommodate additional facilities and housing, the Navy needed to upgrade the island's infrastructure. Its sewage system was upgraded with the 2001 installation of a 6,000-foot (1,800 m), 20-inch (510 mm) sewage main from the island to Pearl Harbor and improvements to the sewage-pumping station. Due to the bridge's unique design, which includes a floating section, it was impossible to use it to transit cable across the loch. In 2005, the Navy contracted drilling for primary and auxiliary conduits 20 feet (6.1 m) apart and parallel to the bridge from Halawa Landing to the Ford Island golf course. The contractor installed 5,045-foot (1,538 m)-long, 24-inch (610 mm)-thick carbon-steel high-magnetic casing conduits, and fiber-optic communications cables and 46kV power lines were fed through them.
In June 2013 the Navy planned to install 60,000 photovoltaic panels over 28 acres (11 ha) on the Ford Island runway, to comply with Congressional and Defense Department mandates to reduce dependence on fossil fuels and offset the cost of Hawaiian energy (the highest in the United States). This plan deviated from a 2009 proposal (using the panels to define the runway) in favor of panels producing twice the power. The Navy offered the Pacific Aviation Museum Pearl Harbor $250,000 toward renovation of the control tower's elevator in exchange for its support of the plan. The museum declined, organizing an internet campaign opposing the plan based on the runway's historic significance and highlighting Ford Island's role in the attack on Pearl Harbor and Amelia Earhart's visit. In response, the Navy decided to install the panels on existing structures around Pearl Harbor. 
Question: What feature did the Admiral Clarey Bridge have that made it impossible to use it to transport cable?
Output (English): a floating section.