干路 meaning in Chinese

primary road; detour
◇干路公路 arterial highway; main-line highway

Can part of the sub trunk roads be modified
可以修改部分主次干路吗？
The requirement of stability is easily reached , due to the design height of embankment is several meter
由干路堤设计高度一般只有几米，稳定条件较易满足。
Can you believe it ? four weeks ago , this was one of the busiest streets in beijing
相信吗？这是上午的北京东三环( 2003 / 05 / 16 ) 。四个星期以前这里是全北京最繁忙的交通干路之一。
The solution of a problem of overcurrent in a line must last . short - lived solutions are not cost - effective
干路上的过流问题的解决必须是持续性的。短时的解决方法是没有实效性的？
The overcurrent level in each line must be analyzed for periods of five years to allow bigger flexibility in planning
为了要在规划上有较大的灵活性，就必须对每条干路上的过流现象做为期五年的长远分析？

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