This session will discuss the known and unknown challenges faced in constructing a missing link in the City of Littleton’s trail system. The Slaughterhouse Gulch Trail was identified as an important missing link in Littleton’s trail system. The link would provide a direct path from the Littleton Community Trail under the railroad tracks to the Mary Carter Greenway, both well-used trails. Existing pedestrian crossings of the rail lines were adjacent to roadways and spaced one mile apart. Initially scoped in 2018, the city applied for and received grant funding in 2020 based on an estimated project cost; design commenced in 2021. In finalizing the design, the estimated construction cost for the project increased significantly. To minimize the project cost, the design eliminated some features, such as park benches and wayfinding signage. However, the estimated construction cost was nearly five times higher than initially expected and greatly exceeded the grant award amount. Littleton had to shift gears quickly. The city did not have sufficient overmatch funding available for the construction of the project as scoped. Through innovative project delivery, the project has completed its first construction phase. The challenges faced, alternatives considered, solution selected, and status of the project will be discussed in this presentation.
After this session, participants will be better able to:
• Scope and estimate concept-level trail design.
• Identify and apply innovative methods in project delivery.
• Identify and resolve known and unknown challenges during construction.
Contributor/Source
Jeremy Clayton-Engineering Inspection Supervisor, Kimberly Dall-Senior Engineer
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Introductory
Focuses on a general or broad overview of the topic, awareness of basic factual recall. Limited experience of the subject matter is necessary to understand content areas.
Applied
Focuses on practical implementation of technical steps or strategies, some prior knowledge and experience of the topic is necessary.
Advanced
Mastery of basic concepts associated with an area has been obtained. Focuses on understanding nuances, advanced concepts, and intricacies with implementation within knowledge area. Strong understanding of how the concept impacts other factors or areas of operations.
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