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A 'typical'
state highway has a 28' pavement and shoulders approximately 8' wide followed
by some drainage depression. The two 12' lanes are not wide enough
to accommodates bike and vehicle traffic at the same time, and it is expensive
to move the drainage ditch. A solution is to pave the shoulders to accommodate
bike lanes at least 4' wide, or 8' wide if traffic speeds greater than
40 mph are anticipated.
The diagram shows two four foot bike lanes
achieved by paving an existing shoulder. There is space to add an additional
2' of paved surface with only minor modifications to the drainage ditch. |
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