Proposed roadway typical sections were evaluated for the locations noted in Table 13. Figure 22 and Table 15 show the number of lanes in each direction included in the proposed typical sections.

Although eight bridges are located along US 27 within the project study limits, an analysis of bridge capacity improvements were not completed as part of this study. Improvements to these structures will be considered in future studies.

Table 15 shows planning-level construction cost estimates and the potential number of parcels impacted for each segment where widening was evaluated. Cost estimates (updated 9/5/2024) are based on the 2045 Build Scenario and generated using FDOT cost per mile models with 25% added for project unknowns. Estimates do not include structures, right-of-way, utilities, potential contamination remediation or amenities such as trailheads, parking, and wayside areas. The following project development phases were estimated as a percentage of the construction cost: PD&E at 8%, design at 12%, Construction Engineering and Inspection (CEI) at 12%. Environmental mitigation was estimated at $12.5 million.

The outsized cost sand ROW impacts relative to the desired outcome would appear to indicate that six and eight-lane widening alternatives are not feasible. The study demonstrates that a significant improvement in the critical areas of safety, freight mobility and detour route/evacuation can be achieved by diverting traffic onto an alternate parallel corridor, acting as a relief for US 27 and reducing or eliminating the need to widen US 27.

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