2021-06-28-minutes-public-works-study-session

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KITTITAS COUNTY DEPARTMENT OF PUBLIC WORKS PUBLIC WORKS — BOARD OF COUNTY COMMISSIONERS STUDY SESSION STAFF REPORT STUDY SESSION DATE: June 28, 2021 TOPIC: Faust Road Speed Study Results ACTION REQUESTED: Schedule a Public Hearing receiving the Engineer's Report on the Request for Speed Reduction LEAD STAFF: Joshua Fredrickson RECOMMENDATION: Schedule a public hearing for July 20, 2021 receiving the County Engineer's report on the request for speed reduction on Faust Road (MP 0.59 to MP 0.78) BRIEFING SUMMARY: • Drew Sinclair requested a speed study on Faust Road (MP 0.59 to MP 0.78) on (May 7, 202 1) • The speed study was conducted on May 12, 2021 to May 19, 2021 • Average daily traffic (ADT) of 250 vehicles with 73 trucks (29%) • ADT Distribution is 53% northbound and 47% southbound • 85% speed northbound at 45 Miles Per Hour (MPH) • 85% speed southbound at 49 Miles Per Hour (MPH) • 1 accident in the past five years with none being an injury accident BACKGROUND: Public Works Department received a phone call on May 7, 2021 requesting a speed reduction on Faust Road. Responding to this request Public Works deployed traffic data collectors May 12, 2021 and collected through May 19, 2021. The study segment on Faust Road (MP 0.59 to MP 0.78) contains 29 percent truck traffic within the average daily traffic distribution of vehicle size. Traffic is split 53% northbound and 47% southbound. Overall 851h percentile speed at this location is 47 MPH with directional speeds of 45 MPH northbound and 49 MPH southbound. DISCUSSION: At the southern limit of the study area is bridge number 88212. At this bridge the posted speed transitions from 35 MPH south of the bridge to 50 MPH north of the bridge. A vertical curve occurs south of the current posted 35 mph sign. 85d` percentile speeds