Oregon State Archives: A 1940 Oregon Coast Tour

U.S. 101 crosses the Lewis and Clark River,5.7 m [Southbound from Astoria], named for the leaders of the overland expedition sent by President Jefferson in 1804 to find a route "to the Western Ocean." William Clark and Meriwether Lewis led the expedition across the Rocky Mountains and down the Columbia River, reaching this coast late in 1805. Sacajawea, a Shoshone Indian, and her husband, a French-Canadian, acted as interpreters for the party.

Wikipedia: Lewis & Clark River

The Lewis and Clark River is a tributary of Youngs River, approximately 20 miles (32 km) long, in northwest Oregon in the United States. It drains 62 square miles (160 km²) of the Northern Oregon Coast Range in the extreme northwest corner of the state, entering Youngs River just above its mouth on the Columbia River at Youngs Bay. Near the river's mouth is the site of former Fort Clatsop of the Lewis and Clark Expedition. The river is named for Meriwether Lewis and William Clark.

The river was called the Netul River by Lewis and Clark and the Native American Clatsop people who were living in the area at the time. It continued to be known as the Netul River until 1925, when it was renamed to honor Lewis and Clark.^[4] The river flows through Lewis and Clark National and State Historical Parks, which were collectively designated as a National Historical Park in 2004.

The river is home to bottom-feeding sturgeon, which is a popular sport fish in the area. It is also home to an extensive salmon repopulation program, just outside Astoria, Oregon proper, that is currently run by the Oregon Department of Fish and Wildlife. The salmon fry, called "fingerlings" can be seen writhing and jumping within their net-lined pens along the river's eastern banks.^{[citation needed]} The river also supports runs of wild steelhead and cutthroat trout.

1910 - 1925 Bridge

April 25, 2020

I have nothing on this one yet. In the first photo below are some old wooden piers that may have belonged to this bridge.

1925 Bridge

Wikipedia: Lewis & Clark River Bridge

The Lewis and Clark River Bridge is a bascule bridge that spans the Lewis and Clark River on U.S. Route 101 Business (a section originally part of U.S. Route 101) in Clatsop County, Oregon. It was designed by Conde McCullough^[1] and opened in 1925.^[2] It was built to replace an earlier bridge at the same location,^[3] a swing-span bridge constructed around 1910.

The total length of the bridge is 828 feet (252 m), and the length of the bascule main span is 112 ft (34 m). The approach spans consist of a total of 48 timber pile and stringer spans.^[4]

BridgeHunter.com: Lewis & Clark River Bridge

Overview: Bascule lift bridge over Lewis & Clark River on Business US 101

Location: Astoria, Clatsop County, Oregon

Status: Open to traffic

History: Built 1924, West approach replaced 2015

Builder: Conde B. McCullough of Redfield, South Dakota (Bridge Engineer)

Design: Single leaf Chicago style bascule lift with timber trestle approaches

Dimensions

Length of largest span: 112.0 ft.

Total length: 870.0 ft.

Deck width: 19.1 ft.

Average daily traffic (as of 2016)

5,100

Inventory numbers

OR 00711 (Oregon Dept. of Transportation structure number)

BH 29908 (Bridgehunter.com ID)

BridgeReports.com: HWY 105 over LEWIS & CLARK RIVER

Latest Available Inspection: October 2017

Good/Fair/Poor Condition: Fair

Status: Open, no restriction [A]

Average daily traffic: 5,100 [as of 2016]

Truck traffic: 14% of total traffic

Deck condition: Satisfactory [6 out of 9]

Superstructure condition: Fair [5 out of 9]

Substructure condition: Fair [5 out of 9]

Structural appraisal: Basically intolerable requiring high priority of corrrective action [3]

Deck geometry appraisal: Basically intolerable requiring high priority of replacement [2]

Water adequacy appraisal: Equal to present desirable criteria [8]

Roadway alignment appraisal: Equal to present desirable criteria [8]

Channel protection: Bank protection is in need of minor repairs. River control devices and embankment protection have a little minor damage. Banks and/or channel have minor amounts of drift. [7]

Pier/abutment protection: Navigation protection not required [1]

Scour condition: Bridge foundations determined to be stable for assessed or calculated scour conditions; field review indicates action is required. [4]

Sufficiency rating: 18.5

Links

Library of Congress: Historic American Buildings Survey, Engineering Record, Landscapes Survey

Lewis & Clark Bridge, Spanning Lewis & Clark River at Milepoint 4.78, on Warrenton Highway (Highway No. 9), Astoria, Clatsop County, OR

http://loc.gov/pictures/item/or0506

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