the river provides groundwater recharge and wildlife habitat including cold freshwater habitat for fish migration and spawning. Three anadromous fish species inhabit the Noyo River: steelhead (Oncorhynchus mykiss irideus), coho salmon (Oncorhynchus kisutch), and chinook salmon (Oncorhynchus tshawytscha), which are all listed under the Endangered Species Act. Steelhead and chinook are listed as threatened (2011), and coho listed as endangered (2011). Non-salmonid species in the watershed include the three-spined stickleback (Gasterosteus aculeatus), Pacific lamprey (Lampetra tridentata), and sculpin (Cottus spp.). Birds of special concern include the marbled murrelet (Brachyramphus marmoratus) and northern spotted owl (Strix occidentalis caurina) because of their close association with old- growth and mature redwood forest, which has been heavily impacted by timber harvest since the late 19th century. Eighty-two mammal species are predicted to be found in the Noyo River watershed including several rodents, bats, and squirrels, beaver (Castor canadensis), black bear (Ursus americanus), ring-tailed cat (Bassariscus astutus), American marten (Martes americana), fisher (Martes pennanti), weasels, American badger (Taxidea taxus), western spotted skunk (Spilogale gracilis) and striped skunk (Mephitis mephitis), mountain lion (Puma concolor), bobcat (Lynx rufus), seals and sea lions, mule deer (Odocoileus hemionus), and elk (Cervus elaphus). However, recent surveys have found no fishers or martens. Bridges At least six bridges span the river, including: Noyo River Bridge at Noyo Cove, carrying the concurrence of State Route 1 and Main Street in Fort Bragg, a prestressed concrete bridge built in 2005 on the or "A&W Logging Road" named after the A&W drive-in restaurant that used to be located at its intersection with Main Street on Park Road 320 near Road 300, a wooden bridge built in 1948 on Park Road 360 north of Road 300, a wooden bridge built in 1958 on a forest road just west of Jet Road 360, a wooden bridge on Forest Road 350 south of Road 300, a metal culvert built in 1987 at Camp Noyo (a Boy Scout Resident Camp operated by the Redwood Empire Council), a wooden suspension bridge spans the river There are at least 20 California Western Railroad crossings of the river visible in aerial photos. The Noyo River Bridge, which opened in 2005, replaced a steel deck truss bridge that was built in 1948. State Route 1 is known as the Shoreline Highway or Pacific Coast Highway but within the Fort Bragg city limits it is concurrent with that town's Main Street and signed