https://www.usa.gov/copyrighted-government-workshttps://www.rawpixel.com/image/3322288Edit ImageSaveSaveEditCropCustom TextPrecast concrete sections are fitted into place after being deposited in position by a special handling vehicle at the AEC NAL. c.1970. Original public domain image from FlickrMorePublic DomainFree CCO U.S. Government image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 952 px | 300 dpiLarge JPEG 3200 x 2539 px | 300 dpiFree DownloadPrecast concrete sections are fitted into place after being deposited in position by a special handling vehicle at the AEC NAL. c.1970. Original public domain image from FlickrMore