Photographs of Booth-Kelly Railroad Bridge (1882), now called Hayden Bridge, a single span Whipple through truss, or Double Intersection Pratt truss, spanning the McKenzie River in Springfield, Oregon, decked for pedestrian use and reopened in 2019.

Photographs of Armitage Bridge (1887), also called Coburg Railroad Bridge and McKenzie River Railroad Bridge (historically, John Day Railroad Bridge), a single span Whipple through truss bridge over the McKenzie River, between Eugene and Coburg. Armitage Bridge is one of the few surviving examples of great bridge engineer George S. Morison’s distinctive designs featuring deep portal bracing with a diamond lattice pattern, making it a very significant historic bridge.

Photographs of Cedar River Trail Bridge 2266-4 (c.1909), a three-span Pratt through truss steel railroad bridge over the Cedar River, carrying the original Milwaukee Road Pacific Extension across Montana, Idaho and Washington States. The line was abandoned in 1980. A Rails-to-Trails Conservancy project retained this bridge near Maple Valley and converted the alignment to a paved multi-use trail.

Photographs of Springfield Railroad Bridge (1911), also called Union Pacific Springfield Railroad Bridge for the line that it carries, a traditional railroad through truss bridge over the Willamette River, between Springfield and Eugene. The design is comprised of a Pratt truss secondary span and a Parker truss main span, with trestle approach spans.

Photographs of Richardson Bridge (1912), a rare example of a double-intersection Warren through truss design, relocated in 1986 to Eugene, Oregon, and converted to a pedestrian-bicycle crossing of Amazon Creek for the Fern Ridge Trail.

Photographs of Oregon City Arch Bridge (1922), a beautiful steel arch bridge designed by state bridge engineer for Oregon, Conde B McCullough, whose bridge designs were noted for their beauty and innovation. The Oregon City Bridge spans the navigable Willamette River between the cities of Oregon City and West Linn.

Photographs of Snow-Reed Swing Bridge (1925), oldest bridge in Fort Lauderdale, and the last operational swing span bridge surviving in South Florida. Builder: Champion Bridge Company, Wilmington, Ohio. Designated historic landmark in 1989.

Photographs of the Willamette River Burnside Bridge (1926), a double-leaf bascule bridge, flanked by unusual double-intersection Warren deck truss approach spans. Bribery, corruption and collusion in its commissioning, changes in its engineering design, and noteworthy architectural features make this a bridge of great historical significance.

Springfield Main Street Bridge (1929), also called Willamette River Springfield Bridge, is a 3-span continuous Warren through truss bridge over the Willamette River, between Springfield and Eugene. Designed by acclaimed bridge engineer Conde B. McCullough.

Photographs of Ferry Street Bridge, also called Coburg Road Bridge, a two-span continuous Warren through truss steel bridge in Eugene, Oregon. The bridge was constructed in 1950 and is eligible for, but not listed on the National Register of Historic Places.

Photographs of Astoria-Megler Bridge, also called the Columbia River Astoria Bridge, a beautiful 3-span cantilever through truss steel bridge with almost 6,000m (20,000ft) of flanking spans – one of the longest bridges in the USA – at Astoria, Oregon. Construction started in 1962 and was completed in 1966.

Freeway off-ramp I-5 southbound to Morrison Bridge. Parapet details and profile.