摘要：
??作为我国重要交通基础设施的“五纵七横”国道干线公路，如何应对生态文明发展需要，如何响应国际上道路工程技术与美学、哲学、社会学、景观学、游憩学等完美融合的发展趋势，以实现新时期的成功转型和改造升级，成为当下讨论热点，并呈现出前所未有的必要性和紧迫性。干线公路如何升级改造，升级改造后的干线公路应该是怎样的风貌？都是目前需要认真研究的重大问题。美国哥伦比亚河历史路是道路通过成功修复与改造提升，获得重生的杰出典范，为我国干线公路升级改造提供了一种新的发展方向，能够为有效地指导和服务于我国干线公路升级改造的重大实践提供借鉴与启示。首先，文章简述了我国干线公路升级改造的现实要求；其次，以哥伦比亚河历史路为案例，从概况与发展历程，道路修复与改造提升方案二方面进行了深入论述；最后，提出了哥伦比亚河历史路对我国干线公路升级改造的借鉴与启示。
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Abstract：
??As important traffic infrastructure, the “five vertical and seven horizontal” of national
trunk highways have faced with many challenges, such as how to deal with ecological civilization
development demand, how to respond to the international development trend of perfect fusion for
road engineering technology with aesthetic, philosophy, sociology, landscape and recreation, etc.
and finally achieve successful transformation and upgrade in the new period. It has been a hot spot
and has shown an unprecedented necessity and urgency at the present. How to upgrade trunk road
and what the landscape of trunk road should be after the upgrading and reconstruction are all major
issues which should be studied seriously. Historic River Columbia Highway is an excellent example
of being reborn through successfully restoring, constructing and upgrading, which offer a new trend
of construction and upgrading for that of arteries in China. Firstly, this paper summarizes the realistic
demand of constructing and upgrading of the arteries in China. Furthermore, the case of Historic
River Columbia Highway is introduced and profoundly explained, through the general situation
and history, combined with the project of restore and construction. Finally, the enlightenment
about restoration of Historic River Columbia Highway for upgrading and construction of Arteries
in China is raised.sformation of bicycle all over the world, how about our country’s situation of
bicycle? Where is the gap between us and the present bicycle-rich countries? Where is the way of
the development of bicycle? This article presents the development history and research progress of
bicycle overseas, as well as analyzes the research situation and predicament of bicycle traffic in our
country. The paper then concludes with some useful insights for the development of the bicycle
use in urban China.
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