The Swaying Span: The 1940 Photograph That Captured the Fall of ‘Galloping Gertie’

Black and white photograph of the heavily twisted Tacoma Narrows Bridge deck with a stranded sedan i

Quick Read

  • On November 7, 1940, gale-force winds triggered severe aeroelastic flutter, twisting the deck of the Tacoma Narrows Bridge until it collapsed into Puget Sound.
  • Journalist Leonard Coatsworth was forced to abandon his stalled sedan on the forty-five-degree tilted roadway and crawl hundreds of yards on hands and knees to safety.
  • Photographers Howard Clifford and James Bashford risked their lives on the churning structure to capture still images, while Barney Elliott filmed iconic motion footage from shore.
  • The disaster transformed civil engineering worldwide, forcing bridge designers to adopt wind-tunnel testing and aerodynamic trusses for long-span suspension bridges.

A dark 1936 sedan rests precariously on a ribbon of concrete tilted at an impossible forty-five-degree angle, suspended high above the cold, wind-rippled waters of Washington State’s Puget Sound. Behind the stranded automobile, massive steel vertical cables hang slack or stretch under unnatural tension, while the bridge deck itself contorts like a strip of flexed cardboard. Captured on the morning of November 7, 1940, this iconic photograph documents one of the most famous structural engineering disasters in modern history: the catastrophic collapse of the first Tacoma Narrows Bridge. The image captures the exact threshold between structural breakdown and total collapse, raising an enduring historical question: how did a state-of-the-art suspension bridge, hailed as an architectural triumph upon its opening just four months earlier, unravel under the pressure of a moderate forty-two-mile-per-hour wind?

Advertisement

What the photograph shows

In this dramatic photograph, the visual geometry expected of a major suspension bridge is violently overturned. Instead of a flat, reassuring roadway stretching smoothly across the water, the two-lane deck is frozen mid-twist, tilted so sharply that the right-side tires of the abandoned automobile rest near the edge of a sheer vertical drop. Reflected daylight gleams off the metallic roof and polished fenders of the dark sedan, highlighting its complete isolation in the center of the span. Suspender cables strain at oblique angles, revealing the tremendous dynamic forces warping the steel girder infrastructure. In the background, the grand steel towers reach into a grey Pacific Northwest sky, framing a scene where human engineering appears entirely humbled by environmental forces. The sharp visual contrast between the heavy industrial materials and their rubbery, wave-like distortion gives the image its timeless, terrifying quality.

The moment behind the image

The car in the center of the frame belonged to Leonard Coatsworth, a copy editor for the Tacoma News Tribune. Around 10:00 AM on November 7, Coatsworth drove onto the bridge accompanied by his daughter’s cocker spaniel, Tubby, seated in the back. As he reached the center span, the roadway began to undulate and twist with unprecedented violence. The violent lateral rolling threw Coatsworth’s car onto its side against the curb, stalling the engine and jamming the steering mechanism. Terrified, Coatsworth scrambled out through the driver’s side window, losing his footing repeatedly on the slippery, wildly swaying concrete. Realizing he could not stand, he was forced to crawl hundreds of yards on his hands and knees toward the eastern tower, his knuckles raw and bruised from gripping the asphalt seams. Tubby, terrified and snapping, refused to leave the back seat. Professor F.B. Farquharson, an engineering instructor from the University of Washington who was on the bridge conducting structural measurements, later attempted to rescue the dog, but the frightened animal bit his hand, forcing Farquharson to retreat empty-handed. Shortly after 11:00 AM, a 600-foot section of the main span tore free, plunging Coatsworth’s car and Tubby into Puget Sound 200 feet below.

Photographer and provenance

This remarkable visual record was created through the daring efforts of local newsmen and photographers who rushed to the Narrows as reports spread that the bridge was violently churning. Howard Clifford, a photojournalist for the Tacoma News Tribune, was among the first on the scene. Carrying heavy press camera equipment, Clifford actually stepped onto the buckled deck in an effort to reach Coatsworth’s stranded vehicle. However, the violent torsional motion threw him off balance, forcing him to drop to his knees and retreat backward toward the tower, snapping photographs as he scrambled for safety. His colleague James Bashford, operating from safer vantage points near the bridgehead, also recorded crucial still frames. Meanwhile, local camera shop owner Barney Elliott captured famous 16mm Kodachrome motion picture footage from the shoreline, documenting the complete sequence from violent twisting to final structural disintegration. Clifford’s still photographs were distributed globally via news syndicates such as the Associated Press, instantly becoming defining images of twentieth-century technological failure. Today, the original prints and negatives are preserved across major historical repositories, including the University of Washington Libraries Special Collections, the Washington State Historical Society, and the Library of Congress.

Historical context

When it opened on July 1, 1940, the Tacoma Narrows Bridge was the third-longest suspension span in the world, trailing only New York’s George Washington Bridge and San Francisco’s Golden Gate Bridge. Designed by prominent engineer Leon Moisseiff, the bridge incorporated modern deflection theory, which allowed for lighter, sleeker, and far less expensive structures. To achieve this minimalist profile, Moisseiff substituted deep, open-truss stiffening girders with shallow eight-foot solid steel plate girders beneath the roadbed. While aesthetically graceful and economical, this design created a solid wall that trapped incoming wind rather than letting it pass through harmlessly. Even during construction, workers noticed the deck bouncing vertically in mild breezes, leading them to nickname the structure ‘Galloping Gertie.’ On the morning of November 7, steady winds of forty-two miles per hour blowing perpendicular to the bridge created a complex mechanical phenomenon known as aeroelastic flutter. Instead of merely bouncing up and down, wind vortices began shedding off the solid girders at alternating frequencies, forcing the roadway into a destructive twisting motion that eventually exceeded the structural capacity of the steel suspenders.

Why it still matters

The image of Coatsworth’s lonely car stranded on the distorted span remains one of the most recognizable educational case studies in civil engineering, physics, and architecture. The collapse of ‘Galloping Gertie’ shattered prevailing assumptions regarding suspension bridge design, proving that engineers could no longer rely solely on static load calculations while ignoring dynamic aerodynamic forces. In the aftermath of the disaster, a federal commission of inquiry led by the Federal Works Agency thoroughly analyzed the failure, establishing new mandatory guidelines for bridge aerodynamics. When the replacement Tacoma Narrows Bridge opened in 1950, it featured open steel trusses, deep stiffening girders, and aerodynamic deck slots that allowed wind to flow freely through the structure. Today, the photograph serves as an enduring visual lesson in scientific humility, reminding designers and the public alike that even the grandest human creations remain subject to the fundamental laws of nature.

Advertisement

LATEST NEWS