Question: What is the bridge near Clark Island made of?
Context: The Bridge near Seydikemer was a Roman segmental arch bridge near the ancient city of Xanthos in Lycia, in modern-day southwestern Turkey.  Its remains are located on the upper reaches of the Xanthos river ("Koca Çayı"), 4 km upstream from the town of Seydikemer, at a site where the gravel river bed reaches a width of 500 m. Only a 29 m long and 4.5 m wide section on the right river bank, outside of the inundation zone, is left today, having once served as approach to the bridge proper.  Despite its near-complete destruction, the bridge represents a noteworthy example of the early use of segmental arches and hollow chambers in bridge building. The New Harmony Toll Bridge, also known as the Harmony Way Bridge, is a now-closed two-lane bridge across the Wabash River that connects Illinois Route 14 with Indiana State Road 66, which is Church Street in New Harmony, Indiana.  The bridge links White County, Illinois with Posey County, Indiana.  The four-span bridge is owned by the White County Bridge Commission and was built without federal funds in 1930 by the Big Wabash Bridge Company of Carmi, Illinois.  The next bridge across the Wabash about 15 miles (24 km) downstream is the Wabash Memorial Bridge near Mount Vernon, Indiana and the next bridge upstream is for Interstate 64, which does not allow farm vehicles. The Bolivia Road Bridge is a truss bridge near Bolivia, Illinois, which carries Bolivia Road across the Sangamon River.  The bridge's main span is a Parker through truss, and the structure also includes a pony truss and several I-beam trusses.  Plans to construct the bridge began in 1900, when Lanesville Township's highway commissioner petitioned Sangamon County for funds for a bridge.  Funding on the bridge ultimately came from a joint effort by Lanesville Township, Sangamon County, Christian County, and Christian County's Mount Auburn Township, as the latter two areas were connected to Sangamon County by the bridge.  J.T. Garrett of St. Louis, Missouri built the bridge in 1901.  A 1994 state bridge survey identified the bridge as one of seven remaining Parker through truss bridges in Illinois, one of which has since been demolished. The Sydney Harbour Bridge is a steel through arch bridge across Sydney Harbour that carries rail, vehicular, bicycle, and pedestrian traffic between the Sydney central business district (CBD) and the North Shore.  The dramatic view of the bridge, the harbour, and the nearby Sydney Opera House is an iconic image of Sydney, and Australia.  The bridge is nicknamed "The Coathanger" because of its arch-based design. The Çatalan Bridge (Turkish: "Çatalan Köprüsü" ), also known as the West Bridge (Turkish: "Batı Köprüsü" ), is a 1575 m long bridge crossing the Seyhan Dam Lake in Adana, Turkey.  The bridge connects the city of Adana to the villages and vacation homes north of the lake.  Despite crossing the Seyhan Dam Lake, the bridge is named after the Çatalan Dam, which is 14 km north and the next dam upstream on the Seyhan River.  The Çatalan bridge was the longest bridge in Turkey from its construction in 1998 to 2007, when it was surpassed by Viaduct No. 1 near Bolu and the longest bridge crossing a body of water until 2016, when it was surpassed by the Osman Gazi Bridge near Gebze. Barnes Island is a small island in the San Juan Islands of the U.S. state of Washington.  It is located near Clark Island off the northeast coast of Orcas Island. Clark Island is a small island in Sydney Harbour, near the coast of New South Wales, Australia.  The island is part of the Sydney Harbour National Park and lies offshore the Sydney suburb of Darling Point, in the eastern part of Sydney Harbour between the Harbour Bridge and the harbour entrance. Clark Island is an island in the San Juan Islands of the U.S. state of Washington.  It is located near Barnes Island off the northeast coast of Orcas Island.  Clark Island State Park, which encompasses the entire 55 acre island, has two picnicking sites, 15 primitive campsites, and nine mooring buoys. The Brønnøysund Bridge (Norwegian: "Brønnøysundbrua" ) is a cantilevered road bridge near the town of Brønnøysund in Brønnøy municipality in Nordland county, Norway.  The bridge was constructed in 1979 and it connects the small island of Torget with the mainland just south of Brønnøysund.  The 550 m bridge has a maximum clearance to the sea of 30 m .  It consists of 20 spans, the longest of which is 110 m .  The bridge deck is made of pre-stressed concrete. The Tes River (Mongolian: Тэс гол; Tuvan: Тес-Хем ) is a river in northwestern Mongolia and southern Tuva, Russia.  Its spring is in Tsagaan-Uul sum in Khövsgöl.  The river then flows through Zavkhan (Mongolia), Tuva (Russia), next back to Uvs (Mongolia) before entering Uvs Nuur lake.  While in Khövsgöl, there is a wooden bridge near Tsetserleg and a concrete bridge near Bayantes on the road to Kyzyl, Russia.
Answer: steel