Agenda - Public Works Committee - 01/17/2023

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• 11-foot drive lanes; 6-foot shoulders (paved); 1-foot gravel shoulders • 20-foot swale; 2-foot clear zone • 8-foot bituminous trail o Provide pedestrian landings at all crossing streets between Nowthen Blvd and Quicksilver St (on south side of 167th Ave) o Wetland Impacts (0.63 Acres) o Right of Way Acquisitions, 10 properties anticipated (28,721 SF) o Relocate Power Poles to right of way (several utility pedestals need relocation also) o Relocate Fences on 4 properties o Additional Project Timeline Anticipated • Wetland delineation / permitting • Wetland delineation requires plant growth (spring) • Permitting process can take several weeks plus • Property Acquisition process is highly dependent on property owners • Utility Pole and Pedestal Relocation requires coordination with utility companies • Generally, timeline is several months • Construction would not likely occur until 2024 • Could construct off -road trail in 2024 and reconstruct street in 2023 o Estimated Total Construction Cost $1,841,490.75 • Bituminous Trail Cost (included) $297,237.88 • Following are in addition to construction costs: • Wetland Credit Cost $78,750.00 • Property Acquisition Cost $71,802.50 • Utility Pole Relocation Cost $50,000.00 Traffic Calming between Quicksilver Street and Saint Francis Boulevard Staff discussed potential traffic calming solutions to the existing 48-foot urban section between Quicksilver Street and Saint Francis Boulevard. The following observations were made: • Posted speed limit is 50 mph o An improved crossing at Quicksilver is not supported at current speed • Current traffic levels are moderate 2,332 ADT o Right turn lanes should not be necessary • Existing off -road parking is adequate o Parking is not necessary on 167th Avenue • Most effective traffic calming would be a reduced pavement width o 12-foot drive lanes; 12 — 16-foot shared center turn lanes • Section has recently been used for several MSA projects • Bunker Lake Boulevard and Puma Street • Riverdale Drive Extension (Llama St to Bowers Dr) • Posted speed limits 30 — 40 mph o ADT levels should allow for right turns into parking lots without traffic back-up o Shared center lane allows for safer left turns into parking lots o Reducing speed limit allows for potential improved crossing at Quicksilver • The pedestrian improvements as a whole would impact this decision o Not currently in the project design Estimated Cost Summary Estimated costs were provided by Bolton & Menk, based off preliminary designs. The construction costs include 10% contingency costs. The costs do not include traffic calming improvements between Quicksilver Street and Saint Francis Boulevard. It should be noted costs provided do not include indirect costs beyond the topics required to compare the pedestrian facility options. Summary of Pedestrian and Bicycle Facility Options: Engineers Estimates