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Storm-pipe replacement leads off Centennial Blvd. upgrade project in March

       The first phase of the nearly $8 million Centennial Boulevard reconstruction/paving project is due to start in June, but the street will first be torn up in March, according to city plans, to repair a failing storm pipe.
       Scheduled to last until May, the $1.5 million fix is needed between Garden of the Gods Road and South Douglas Creek, city plans show.
       That's the same stretch of Centennial designated for phase one of the paving. See Westside Pioneer story.
       The culprit is a deteriorated, 5-foot-wide corrugated metal pipe (CMP). “The CMP has collapsed and caused roadway failures over the past few years,”
A City Streets crew works on the sinkhole that appeared in the right-hand lane of southbound Centennial Boulevard north of Douglas Creek in May 2015. The problem was caused by a broken stormwater pipe. The 5-foot-wide cylinder between Garden of the Gods Road and the creek will be replaced by relining it with a new pipe in a $1.5 million project to start in March.
Westside Pioneer file photo
reads a project description by City Engineering Manager Mike Chaves.
       The funding is coming from the Pikes Peak Rural Transportation Authority.
       A contractor, Layne Inliner, will do the work. It will consist of inserting a new pipe inside the existing one. An established city process, the process will take less than half the time it would to pull out the old line and install a new one, Chaves explained.
       There will be an effect on traffic. Starting at Garden of the Gods Road, the roughly 100-yard-long project area will gradually move south along Centennial, digging “primarily in the outer [right-hand] southbound lane” (where the pipe is), according to Ryan Phipps, the project manager for the paving project.
       The city will “work with the contractor to develop a traffic control and phasing plan to limit the impact,” he added.
       He described the underground work as necessary before the paving project. “We would not reconstruct the road without repairing the pipe as we would likely have more failures and damage to the newly reconstructed roadway,” he said.
       The city displayed the need for the CMP fix on a poster at its January open house on the paving project. It was noted among several drainage improvements that would result from the reconstruction. However, the open house did not point out that the storm pipe work would need to be done before the paving project.
       The problem became prominent in May 2015, when the pipe broke about 200 feet north of Douglas Creek, creating a sinkhole for several days in the right-hand southbound lane.

Westside Pioneer article
(Posted 2/20/16; Transportation: (Major Roads)

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