Coming home from vacation, I noticed that the reconstruction of I35 south from Des Moines is moving the southbound roadway over 40-50 feet. Why do that? Larger median? Why not use a cable barrier.
My theory: Moving the SB roadway over allows for the new roadway to be built with less disruptions to the existing roadway.
Although it may not be as costly as acquiring ROW, a cable barrier does eventually grow a decent maintenance cost.
Quote from: Revive 755 on August 22, 2014, 05:48:18 PM
My theory: Moving the SB roadway over allows for the new roadway to be built with less disruptions to the existing roadway.
Although it may not be as costly as acquiring ROW, a cable barrier does eventually grow a decent maintenance cost.
I thought the same thing. However, the cost involved....... New overpasses, ramps, etc, must be huge.