Search the Wisconsin Historical Society's collections
Filter: Categories of Wisconsin Historical Images
Filter: Subject of Road construction workers
Filter: Year of 1900-1999
Filter: Year of 1960-1969
Filter: Subject of construction equipment
| Date: | 1961 |
|---|---|
| Description: | International TD-30 crawler tractor (TracTracTor) working to widen U.S. Highway 40 near Berthoud Pass in Colorado. The highway wound through the Rocky Moun... |
| Date: | 1960 |
|---|---|
| Description: | View from below looking up towards workers constructing and reinforcing the forms for the footings of the interstate highway bridge at Mirror Lake. |
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