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City sets open house Oct. 8 on plans to replace closed-off Chestnut Street bridge

A temporary pump was in use at the now- blocked-off Chestnut Street bridge. The portion of the street that's open north of Ellston Street can be seen in the far background, beyond the equipment.
Westside Pioneer photo
       Engineers for the city and a hired consultant (HDR Inc.) will host an open house Thursday, Oct. 8 on a planned replacement for the failed bridge that has closed Chestnut Street between Vondelpark Drive and Ellston Street since early August.
       Scheduled from 5 to 7 p.m., the session will be at the Springs Journey Church, 1250 Vondelpark. Information will be provided on the “current project status, new structure concepts and options and tentative construction timelines,” a press release states.
       The bridge consists of compacted dirt over South Douglas Creek, which previously ran about 30 feet under Chestnut in a corrugated metal storm pipe. The pipe had been known to be leaking and was due for replacement in 2019 as a previously approved, $1.8 million Pikes Peak Rural Transportation Authority (RTA) project. The leakage, combined with a very wet spring, caused the dirt to lose compaction, engineers have explained
       The hole appeared Aug. 10 and quickly grew in size. The city has since dug out the remainder of the pavement over the top, graded the dirt to facilitate runoff and set up a temporary pump to keep creek or rain water from accumulating.
       Chestnut is a two-lane street west of I-25 that normally serves as a frontage road between Fillmore Street and Garden of the Gods Road.
       A previous estimate from City Engineering was that the replacement work would take half a year at the least and a year at the most.
       In conjunction with the city, HDR has been working up two types of options for a new bridge. One is for box culverts (instead of a steel pipe) in a compacted-dirt layout similar to what's been there. The other option is to have a more traditional bridge that would span the creek and let it flow naturally underneath.

Westside Pioneer/press release
(Posted 10/2/15, updated 10/6/15; Transportation: Major Roads)

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