2022-07-11-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: July 11, 2022 TOPIC: Charlton 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 August 2, 2022, receiving the County Engineer's report on the request for speed reduction on Charlton Road (MP 0.00 to MP 1.10) BRIEFING SUMMARY: • A resident on Charlton Road requested a speed reduction on Charlton Road (MP 0.00 to MP 1.10) on March 1, 2022 • The speed study was conducted on March 22, 2022, to March 31, 2022 • Speed study data collected at MP 0.59 • Average daily traffic (ADT) of 84 vehicles, with 30 trucks (36%) • ADT distribution is 49% eastbound and 51 % westbound • 85% speed at 53 Miles Per Hour (MPH) • No accidents in the past five years BACKGROUND: Responding to a request received on March 1, 2022, to reduce the posted speed on Charlton Road, Public Works deployed traffic data collectors March 22, 2022 and collected through March 31, 2022. Due to staffing changes, data processing and reporting was delayed. Traffic and speed data was collected at mile post 0.59. This road segment has 36 percent truck traffic within the average daily traffic distribution of vehicle size. Traffic at this location is split 49% eastbound and 51 % westbound. Overall 85th percentile speed at this location is 53 MPH with directional speeds of 52 MPH westbound and 53 MPH eastbound. DISCUSSION: 85th percentile speeds show traffic is operating at a speed greater than the current speed limit of 50 MPH. There are ten approaches along Charlton Road, primarily serving residential uses. One access serves a commercial use.