page_title: Washington State Route 401
section_title: History
hierarchical_section_title: Washington State Route 401 / History
caption_attribution_description: The Astoria – Megler Bridge viewed from Washington State Route 401 near Megler.
context_page_description: State Route 401 is a 12.13-mile long state highway in Pacific County within the U.S. state of Washington. The highway originates at the north end of the Astoria–Megler Bridge west of Megler at an intersection with U.S. Route 101. The roadway travels northeast, paralleling cliffs, the Columbia River and the South Fork of the Naselle River to Naselle, ending at SR 4. The road was designated Secondary State Highway 12B between 1937 and 1964, when SR 401 was created to replace SSH 12B. The Astoria–Megler Bridge, completed in 1966, replaced a ferry east of the bridge, where the highway originally ended, and is known locally as Kingston Ferry Road. The roadway was extended west to the north end of the bridge, where it currently terminates. The former ferry terminal became the Dismal Nitch rest area, named after the Lewis and Clark Expedition's description of the place.
context_section_description: Secondary State Highway 12B (SSH 12B) was created during the 1937 establishment of the Primary and secondary state highway system as an auxiliary route of Primary State Highway 12 (PSH 12), co-signed as both U.S. Route 101 (US 101) and US 830. The highway ran from PSH 12 / US 101 at the Megler ferry landing on the Columbia River to PSH 12 / US 830 in Naselle, with a gap between Megler and Knappton. SSH 12B, including the Megler–Knappton gap, became SR 401 during the 1964 highway renumbering. After the Astoria–Megler Bridge was completed on August 27, 1966, SR 401 was extended west to the new bridge and the gap between Megler and Knappton was completed by 1968. The Dismal Nitch Safety rest area, formerly the Megler Landing Rest Area, was remodeled twice in 2007 to be accessible year-round.
caption: The Astoria–Megler Bridge, which carries U.S. Route 101 (US 101) across the Columbia River, was completed in 1966 and SR 401 was extended west from the former Astoria-Megler ferry landing to the new bridge.
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