Bridges As Water Related Structures
A bridge is a structure built to span physical obstacles without closing the way underneath such as a body of water, valley, or road, for the purpose of providing passage over the obstacle. There are many different designs that each serve a particular purpose and apply to different situations. Designs of bridges vary depending on the function of the bridge, the nature of the terrain where the bridge is constructed and anchored, the material used to make it, and the funds available to build it. [from wikipedia]
Bay Bridge Bridges Canary Road Bridge Capp's Crossing Golden Gate Laramie Railroad Lefty O'Doul Old Bridge Peter Courtney Minto Island Bridge Richmond San Rafael San Diego Coronado Sandifur Memorial Bridge Tower Bridge Vern Adkison Viaduc de Millau Vincent Thomas Bridge Wooden Bridge Yaquina Bay Bridge
Canary Road Bridge, At Honeyman State Park, Lane County, Oregon, As A Campsite Place

Most bridges are fixed bridges, meaning they have no moving parts and stay in one place until they fail or are demolished. Beam bridges are horizontal beams supported at each end by substructure units and can be either simply supported when the beams only connect across a single span, or continuous when the beams are connected across two or more spans. [from wikipedia]

Capp's Crossing, Footbridge

Pedestrian bridge inCapp's Crossing Campground

Bridges, On The Cascade Head Trail

Small foot bridges took the trail over small creeks along the way.

Golden Gate, Bridge, San Francisco, As A Water Related Stucture

The Golden Gate Bridge is a suspension bridge spanning the Golden Gate, the one-mile-wide (1.6 km) strait connecting San Francisco Bay and the Pacific Ocean. The structure links the American city of San Francisco, California --the northern tip of the San Francisco Peninsula-- to Marin County, carrying both U.S. Route 101 and California State Route 1 across the strait. The bridge is one of the most internationally recognized symbols of San Francisco, California, and the United States. It has been declared one of the Wonders of the Modern World by the American Society of Civil Engineers.[from wikipedia]

Laramie Railroad, Bridge

A foot bridge spanning a vast railroad yard

Lefty O'Doul, Bridge

Opened in 1933 and originally called the Third Street Bridge.A draw bridge that crosses China Basin in San Francisco.

Wooden Bridge, Minto-Brown Island, Salem, Oregon

A wooden bridge over a creek feeding Willamette Slough, built byContinental Custom Bridge Co., Alexandria, Montana. It was apedestrian footbridge with a vehicle load limit of 5 tons.

Peter Courtney Minto Island Bridge, Connects Riverfront Park to Minto-Brown Island, In Salem, Oregon

The Peter Courtney Minto Island Bridge and Trail is the last critical link in connecting 1,300 acres of parks and more than 30 miles of off-street trails between south Salem, downtown, and West Salem. When combined, this acreage is larger than New York City's Central Park. [from city of Salem website]

Richmond San Rafael, Bridge

Connecting Alameda County to Marin County

Tower Bridge, Sacramento, California
Sandifur Memorial Bridge, High Bridge Park (Peoples' Park), One of the Parks Of Spokane, Washington

Sandifur Memorial Bridge is a footbridge carrying hikers and bicycles on theCentennial Trail over the Spokane River, Spokane, Washington. This footbridge replacedand earlier railroad bridge. This Sandifur Memorial Bridge provides a much-needed linkbetween downtown and and western parts of the trail.

San Diego Coronado, Bay Bridge

Connecting San Diego's freeways to Coronado Island.

Bay Bridge, San Francisco/Oakland
Old Bridge, On The Skagway Rail Tour, White Pass & Yukon Route

A old metal and wooden bridge near the Yukon end that has been abandoned.

Vern Adkison, Bridge At The Mount Pisgah Arboretum

A fairly new bridge build over a creek in the wetlands area of Mount Pisgah Arboretum.

Vincent Thomas Bridge, San Pedro, Los Angeles, California, As A Form Of Water Structure

The Vincent Thomas Bridge is a 1,500-foot-long (460 m) suspension bridge, crossing the Los Angeles Harbor in the U.S. state of California, linking San Pedro, Los Angeles, with Terminal Island. The bridge is part of State Route 47, which is also known as the Seaside Freeway. The bridge opened in 1963 and is named for California Assemblyman Vincent Thomas of San Pedro, who championed its construction. It was the first welded suspension bridge in the United States and is now the fourth-longest suspension bridge in California and the 76th-longest span in the world. The clear height of the navigation channel is approximately 185 feet (56 m); it is the only suspension bridge in the world supported entirely on piles.[from wikipedia]

Yaquina Bay Bridge, In Newport, An Oregon Beach Town

Yaquina Bay Bridge carried Highway 101 south out of town over Yaquina Bay.

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