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321 SW 4th Ave., Suite 400 Portland, OR 97204 [PHONE REDACTED] lancastermobley.com Memorandum To: Dan Handel City of Woodburn From: Jessica Hijar Date: March 30, 2022 Subject: 1030 Young Street Development Traffic Analysis Letter This memorandum evaluates the transportation impacts of the proposed 52-unit condominium to be located at 1030 Young Street in Woodburn, Oregon. Based on scoping discussions with the City of Woodburn and the requirements in the Woodburn Development Ordinance Section 3.04.05, the trip generation falls below the threshold for a full traffic impact analysis. This report provides a summary of the trip generated by the proposed development and analyzes roadway safety within the site vicinity and at the site access. Site Vicinity The subject property is located west of Pacific Highway, south of Young Street, and north of Cleveland Street. Figure 1 shows the site vicinity with the subject site outlined in red and has a total area of 3.75 acres. Young Street is classified as a Minor Arterial and has a posted speed limit of 35 mph. Figure 1: Vicinity Map 6/30/2022 Daniel W Stumpf Digitally signed by Daniel W Stumpf DN: c=US, o=Washington, dnQualifier=A01410D0000017C9EF4D9670000F627, cn=Daniel W Stumpf Date: 2022.03.30 16:22:00 -07'00' ---PAGE BREAK--- March 30, 2022 Page 2 of 5 Trip Generation To estimate the number of trips that are projected to be generated by the development, trip rates from the Trip Generation Manual1 were used. Specifically, data from land use code 215, Single Family Attached Housing, was used to estimate the proposed development’s trip generation based on the number of units. The trip generation calculations show that the proposed development is projected to generate 25 morning peak hour trips, 30 evening peak hour trips, and 374 new average weekday trips. The trip generation estimates are summarized in Table 1. Table 1: Trip Generation Summary Land Use ITE Code Size Morning Peak Hour Evening Peak Hour Weekday In Out Total In Out Total Total Single Family Attached Housing 215 52 units 8 17 25 17 13 30 374 Safety Analysis Crash Data Using Data obtained from ODOT’s Crash Analysis and Reporting Unit and ODOT TransGIS, a review was performed for the most recent five years of available crash data (January 2016 through December 2020). A map showing the location and severity of crashes is shown in Figure 2. There were two reported collisions at the intersection of Young Street at Bryan Street. A rear-end collision caused by driver inattention resulted in a crash classified as possible injury. A bicycle collision was caused by a right-turning vehicle not yielding to the right of way of the bicyclist. The cyclist suffered injuries classified non- incapacitating injury. There were three reported collisions just west of the site frontage with the crash types listed as backing, rear- end, and fixed object. These were reported at various locations with the highest severity listed as a non- incapacitating injury. 1 Institute of Transportation Engineers (ITE), Trip Generation Manual, 11th Edition, 2021. ---PAGE BREAK--- March 30, 2022 Page 3 of 5 Figure 2: Crash Data (ODOT TransGIS) Based on a review of the most recent five years of available crash data, no significant trends or crash patterns were identified along the study corridor which are indicative of specific safety concerns. Sight Distance Intersection sight distance was measured and evaluated in accordance with the standards established in A Policy on Geometric Design of Highways and Streets2. Intersection sight distance is an operational measure, intended to provide sufficient line of sight along the major street so that a driver can turn from the minor street without impeding traffic flow. To measure intersection sight distance, the driver’s eye is assumed to be 14.5 feet from the near edge of the nearest travel lane of the intersecting street and at a height of 3.5 feet above the approach street pavement. The oncoming vehicle driver’s eye height along the major-street approach is assumed to be 3.5 feet above the cross-street pavement. Young Street has a flat grade within the site vicinity. There are no existing obstructions to sight lines from 14.5 feet behind the edge of the travel lane. Based on the posted speed limit of 35 mph, there is a recommended intersection sight distance of 390 feet. Sight distance was measured to be in excess of 400 feet to the east and west of the proposed site access. 2 American Association of State Highway and Transportation Officials (AASHTO), A Policy on Geometric Design of Highways and Streets, 7th Edition, 2018 ---PAGE BREAK--- March 30, 2022 Page 4 of 5 Access Spacing Based on the access requirements shown in Table 3.04A in the Woodburn Development Ordinance, minor arterials have a minimum driveway separation of 245 feet. Figure 3.04B shows that driveway spacing is measured nearside to nearside on the same side of the street. The driveway for the property to the west is located approximately 245 feet to the west from the site access, measured nearside to nearside. The site plan includes a 12-foot dedication at the eastern property line for a potential future driveway to be shared with a planned future multifamily development on a property to the east of the project site. The potential future driveway is located 245 feet east of the proposed site access, measured nearside to nearside, and opposite of Bryan Street. The City’s access spacing standard is met. Pedestrian Connection The City has requested the applicant install an 8-foot bicycle and pedestrian path along the southern property line which fronts an active railroad line, Willamette Valley Railway. This is not included in the City of Woodburn’s Transportation System Plan as a planned pedestrian project. There are no connections for this path available at adjacent properties. The property to the west is fully built out and the property to the east is vacant, with a multifamily development planned for construction. Connectivity to the future multifamily development to the east is provided via an internal pedestrian path along the eastern property line near the playground. While it appears to be a small section of improved path along the railway west of Gatch Street, the connecting local roads do not have sidewalks or protected paths to connect to. Approximately half a mile to the west and east of the property the rail lines diverge and cross, creating a safety concern for pedestrians if directed here with no protected pedestrian connection. Conclusions Due to the existing site constraints, the applicant proposes to omit the pedestrian and bicycle path along the southern property line. The minimum required intersection sight distance is available at the proposed site access location and the minimum driveway standard is met. Based on a review of the most recent five years of available crash data, no significant trends or crash patterns were identified along the study corridor which are indicative of specific safety concerns. ---PAGE BREAK--- March 30, 2022 Page 5 of 5 Appendix ---PAGE BREAK--- 1. REFER TO LANDSCAPE PLANS FOR ADDITIONAL PEDESTRIAN WALKS AND PLANTING INFORMATION. 2. ANY GRADING AND UTILITIES (BOTH EXISTING AND NEW) ARE SHOWN FOR REFERENCE ONLY - REFER TO CIVIL DRAWINGS. 3. SITE PAVEMENT MATERIAL AND DESIGN PER CIVIL. MAX. SPACE BETWEEN JOINTS TO BE 10'-0". 4. REFER TO PLUMBING DRAWINGS FOR HOSE BIB LOCATIONS. 5. LIGHTING TO BE INSTALLED AT PATHS ALONG THE REQUIRED EXIT WAYS - REFER TO ELECTRICAL SITE PLAN. 6. ALL GROUND MOUNTED UTILITY EQUIPMENT SHALL BE SCREENED FROM THE STREET AND THE BUILDING WITH LANDSCAPE - VERIFY LOCATION WITH EACH UTLITY PROVIDER AND COORDINATE WITH LANDSCAPING AS NEEDED. 7. ANY WALL PACK LIGHTING PROVIDED TO BE SHIELDED. 8. THE RUNNING SLOPE OF WALKING SURFACES SHALL NOT BE STEEPER THAN 1:20. THE CROSS SLOPE OF A WALKING SURFACE SHALL NOT BE STEEPER THAN 1:48. 9. PARKING SPACES AND ACCESS AISLES SHALL HAVE A SURFACE SLOPES NOT STEEPER THAN 1:50 PER IBC. 10. ANY RETAINING WALLS, BERMS, SWALES, ETC. SHOWN FOR REFERENCE ONLY - REFER TO CIVIL DRAWINGS. 11. ALL WALL MOUNTED UTILITIES AND ASSOCIATED EQUIPMENT SHALL BE PAINTED TO MATCH ADJACENT BUILDING COLOR. SITE PLAN GENERAL NOTES: --REVIEW-- SITE PLAN LEGEND OBJECT/PATTERN DESCRIPTION(S) - BUILDING FOOTPRINT - PROPERTY LINE - SETBACK LINES - ROOF OUTLINE (NOTE: SEE A0 SHEETS FOR ADDITIONAL GENERAL LEGEND INFORMATION) - PROPERTY DATUM POINT - LIGHT BOLLARD LB - POLE LIGHT FH - FIRE HYDRANT - WATER LINE - FIRE SERVICE LINE - STORM SEWER LINE - SANITARY SEWER LINE - ELECTRICAL SERVICE LINE W FS ST SS E DS - DOWNSPOUT GAS - NATURAL GAS LINE - GREASE WASTE LINE GW X X X - FENCE LINE - ACCESSIBLE PATH FROM BUILDING TO PUBLIC WAY DISCUSS USE OF UTILITY LINES IN ARCHITECTURAL SITE PLAN APPLY SPECIALTY TAG, "TAG BY CATEGORY" TO MODELED DOWNSPOUTS (LEADER VISIBLE WITH DOT FOR LEADER TIP) PARKING STATISTICS DESCRIPTION FULL-SIZE PARKING STALLS GARAGE STALLS DRIVEWAY STALLS TOTAL ON-SITE PARKING N/A 91 91 182 * BASED ON PARKING RATIO OF 0.8 / 1,000 SQ. FT. # REQUIRED # PROVIDED N/A 52 52 104* SITE STATISTICS DESCRIPTION BUILDING FOOTPRINT 30% AREA (SF) % OF SITE 48,798 PAVING SIDEWALKS LANDSCAPE AREA TOTAL SITE AREA 33% 6% 31% 53,866 10,246 50,162 163,072 REVIEW REQUIREMENTS AND FILL IN DATA 800.00' 800.00' 600.00' 600.00' 800.00' 800.00' 12' DEDICATED TO POTENTIAL FUTURE DRIVEWAY 7'-5" 5'-0" 24'-0" 5'-0" 20'-2" 35'-0" 15'-2" 25'-1 3/4" 20'-1 3/4" 25'-1 3/4" 24'-0" 25'-1 3/4" 5'-0" 24'-0" 5'-0" 24'-0" 5'-0" 5'-0" 5'-0" 5'-0" 25'-1 3/4" 24'-0" 59'-3 1/2" 120'-0" 16'-3 1/2" 60'-0" 16'-3 1/2" 120'-0" 15'-0" 352'-1" 11'-9" 10'-1 3/4" 35'-0" 74'-3 1/2" 90'-0" 5'-0" 5'-1 3/4" 35'-0" 17'-10 181/256" 25'-0" 35'-0" 24'-9 1/2" 35'-0" 90'-0" 14'-3 1/2" 120'-0" 210'-0" 32'-8 1/2" 35'-0" 35'-0" 5'-0" BUILDING A BUILDING B BUILDING C BUILDING D BUILDING K BUILDING L BUILDING M BUILDING N BUILDING J BUILDING E BUILDING F BUILDING H BUILDING G 10'-1 3/4" YOUNG ST. 10'-0" x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x EQ EQ x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 15'-1 3/4" x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 12'-0" 12'-0" PLAYGROUND 12'-2" 15'-0" 150'-3 1/2" 8'-0" 34'-0" 20'-2" 35'-0" 13'-2 1/2" 25'-0" 25'-1 3/4" 35'-0" 12'-0" x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x x 10'-3 1/2" 10'-3 1/2" x x x x x x x x x x x x x x x x PUE PUE 5'-0" 500 Liberty Street SE, Suite 100 / Salem, Oregon 97301 Ph: [PHONE REDACTED] / Fx: [PHONE REDACTED] Issue: Date: OWNER Name PH: CONTRACTOR Company name PH: CIVIL ENGINEER Company name PH: STRUCTURAL ENGINEER Company name PH: MECH./ ELECT./ PLUMBING Company Name PH: INTERIOR DESIGN Company Name PH: KITCHEN CONSULTANT Company name PH: LANDSCAPE ARCHITECT Company name PH: JURISDICTION Company name PH: CLIENT LOGO NOT FOR CONSTRUCTION SD SCHEMATIC DESIGN 12/6/2021 4:01:16 PM A1.0A WEST COAST HOME SOLUTIONS WOODBURN, OREGON issue name xx.xx.xxxx BUILDING A SITE PLAN KEYNOTES Rev: Description Date: SCALE: 1/16" = 1'-0" 1 BUILDING A SITE PLAN ---PAGE BREAK--- Land Use: Land Use Code: Land Use Subcategory: Setting/Location Variable: Trip Type: Variable Quantity: Trip Rate: 0.48 Trip Rate: 0.57 Enter Exit Total Enter Exit Total Directional Split 31% 69% Directional Split 57% 43% Trip Ends 8 17 25 Trip Ends 17 13 30 Trip Rate: 7.2 Trip Rate: 8.76 Enter Exit Total Enter Exit Total Directional Split 50% 50% Directional Split 50% 50% Trip Ends 187 187 374 Trip Ends 228 228 456 General Urban/Suburban TRIP GENERATION CALCULATIONS Source: Trip Generation Manual, 11th Edition Single-Family Attached Housing 215 All Sites WEEKDAY SATURDAY Dwelling Units Vehicle 52 AM PEAK HOUR PM PEAK HOUR