Title
Circle Drive Bridges Replacement Project and Circle Drive Bridges Student Ambassadors Program
Presenter:
Ryan Phipps, P.E., Sr. Civil Engineer, Public Works Department
Body
Summary:
An investigation of the existing condition of the Circle Drive Bridges was conducted to determine if the bridges should be rehabilitated or replaced with new structures. For both options investigated, a life-cycle cost analysis was performed to create a base line for comparison. An outline of the expected life of each alternative was also conducted.
Findings from this investigation indicated that a complete replacement of the bridge structures was needed. The project team is now developing a cost-effective solution to facilitate a successful project. Preliminary design is April 2019 - January 2020. Final design is expected February 2020 -- February 2021. While a construction start date has not yet been set, construction is anticipated to take approximate two years. During this time, the public will experience traffic impacts, such as detours, lane shifts and minimized speeds, and will be notified in advance.
Previous Council Action:
N/A
Background:
The eastbound and westbound lanes of Circle Drive are carried on a total of four bridges consisting of two sets of twin structures. The overall bridge width for both structures is 82 feet and carries two lanes of traffic in both directions. They span over Fountain Creek, the BNSF railroad, an irrigation ditch, Las Vegas Street, Hancock Expressway, Pikes Peak Greenway Trail, and a pedestrian path between Las Vegas Street and the Creek.
The Circle Drive Bridges were originally built in 1963. Having exceeded their 50-year service life, and after in-depth analyses of the existing condition, the City has initiated a planning and design process to replace the bridges. The replacement project will assure the new bridges perform better and are safer for the community, while reducing impacts to the traveling public duri...
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