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    • Historical Equipment

    Virginia Department of Transportation image from the Edgar Browning Collection, HCEA Archives.
    Historical Equipment

    Form-Riding Concrete Paving Spread

    Tom Berry
    Nov. 22, 2024
    Interstate 95 project illustrates early mechanized concrete paving.

    Historical Equipment

    Navistar Corp. image
    Model H tractor pulling a concrete dump body.
    Bureau of Public Roads Manuscript Collection, Idaho State Archives
    Knox Yellow road scraper.
    Doug Osborne Papers, HCEA
    Galion Little Master
    HCEA archives
    LeTourneau-Westinghouse C Tournadozer
    Earthmoving

    LeTourneau and the advent of the wheel dozer

    Tom Berry
    Oct. 20, 2023
    R.G. LeTourneau solved problems inherent with crawlers by mounting a blade on a wheeled tractor.
    Mixermobile Manufacturers, HCEA Archives
    Mixermobile Twin Truckmobile
    Historical Equipment

    Mixermobile Twin Truckmobile powered by twin 90-horsepower engines

    Tom Berry
    Sept. 22, 2023
    Built in the early 1940s, the Twin Truckmobile hit a road speed of 50 mph.
    Caterpillar image, Maier-Dailey Papers, HCEA Archives
    On a road job near Galva, Illinois, in September, 1938, a Cat D4 with a High Loader is spreading fill, plus towing a disc and a pneumatic roller. It also ditched, placed pipe, and cleared brush. The machine handled excavation as well, including overburden, gravel, and earth and rock cuts.
    Earthmoving

    The Trackson High Loader attachment

    Tom Berry
    July 5, 2023
    Primarily used with Caterpillar tractors
    National Inventors Hall of Fame
    Nihf Bobcat
    Earthmoving

    Skid Steer Prototype Arrives at Inventors Museum

    Rod Sutton
    April 26, 2023
    On site for Hall of Fame celebration
    Presidio
    Earthmoving

    How earth was moved for the Golden Gate Bridge

    Tom Berry
    March 17, 2023
    The world famous Golden Gate Bridge was built in the mid-1930s. Not so well known was the considerable earthmoving required to construct the approaches on U.S. Highway 101.California...