The public are being urged to view the Story Map on the Transport Scotland website to help keep them informed of progress as the project develops.
The Story Map also includes a questionnaire seeking views on the existing route, how it influences travel decisions, and on the proposed scheme itself.
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Transport Minister Graeme Dey said: "We remain committed to upgrading this key strategic route along the A82 between Tarbet and Inverarnan.
"The design work for this challenging scheme has continued throughout the pandemic and we now want to hear from the public on their experiences of using this route, as we work towards publishing draft Orders.
"We need to ensure that any future upgrade fits within the area's outstanding landscape and environment and maintains the renowned beauty of the Loch Lomond and Trossachs National Park, whilst also minimising disruption while construction takes place.
"This vital route connects the Highlands and Islands with Glasgow and the Central Belt and the work we are doing will lead to improved road safety and journey time reliability, as well as helping to meet the needs of business, communities and visitors alike."
