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A bottomless elevator shaft/mineshaft concept.  Composite image.
Dom Luís I Bridge close up
A grayscale shot of a bridge over the river
Construction industry. Different angles of rebars reinforcement prepared for pouring concrete for the foundations.
The iconic Bismarck-Mandan rail bridge in the spring. Taken around 2001.
Vintage iron bridge spanning the Schuykill River in Philadelphia. Built 1897.
base under construction site with pillar and engineers worker use crane machinerry with concrete metal on high angle view
Detail of a rusty railroad track
A close-up of the railway bridge over the Yongjiang River in Nanning, Guangxi, China
Aerial view of railway bridge across Willamette River in Oregon, USA.
Steel reinforcement of a base plate. Construction building site
Laying of new railway tracks with wooden sleepers laid on groundwork crushed stone. Railway industry and transport infrastructure.
Old Iron Bridge in Piedmont
Bridge over the Eume
Railroad Tracks Leading into Historic Thurmond in New River Gorge National Park during the fall season in the Appalachian Mountains of West Virginia, USA.
close up of beam on ground
Strength concept in the world.
building formwork ready to be filled with cement mixture with iron that is still in good condition
Metal foundation post in construction site seen from above
Inside view of steel bridge structure, interior view of strong metal bridge
Tacoma, Washington, USA.  Murray Morgan Bridge. Sea port. Construction details
Close of of Railroad Track
concrete material iron structure presenting around forest industrial background.
old iron bridge
The metal bridge. Black and white photo. Old bridge
Flash flooding after record breaking rainfall erodes culverts beneath an important rail line.
shattered sleepers and rusty rail.
Tunnel construction stacked arched beams
Free Images: "bestof:Photograph with caption "Form for foundation, showing shoring of 3" triple lap sheeting. Railrway Bridge No. 5. June... - NARA - 282334.tif Scope and content"
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