CITY OF MANHATTAN BEACH CITY HALL
COMMUNITY DEVELOPMENT DEPARTMENT-TRAFFIC ENGINEERING DIVISION 1400 Highland Avenue, Manhattan Beach, CA 90266
WEBSITE: www.manhttanbeach.gov • PHONE: (310) 802-5522 FROM: Erik Zandvliet, T.E., City Traffic Engineer
SUBJECT: 401 Rosecrans Avenue Trip Generation Review
DATE: February 17, 2022
The Linscott, Law & Greenspan traffic consulting firm prepared a v ehicle trip generation forecast for a proposed multi-tenant residential development at 401 Rosecrans Avenue based on plans prepared by Withee Malcom, a BSB Design Studio, dated September 24, 2021. (See attached Tables A1 to A4.) The development consists of 79 apartment units, including a small percentage of low income units. The site will provide 127 total parking spaces in a subterranean parking garage accessed via Rosecrans Avenue. I have reviewed the existing and projected vehicle trip calculations and found them to be accurate and reasonable. A summary of existing and projected trips is summarized below.
Land Use Description
(Trip Generation, 10
th
Ed.)
Quantity Daily Trips A.M. Peak
Hour Trips
P.M. Peak
Hour Trips
Proposed Land Use
Multi-Family Residential 79 units 578 36 44
Existing Land Uses
(Office, Medical Office,
Spa, Bar, Restaurant) Various 931 18 90
Net New Trips -353 18 -46
Alternative Projects for Comparison (usi ng 1.5 Floor Area to Lot Size Ratio) Shopping Center 65,000 sq. ft. 1,472 37 148
Office Building 65,000 sq. ft. 633 75 75
Medical Offices 65,000 sq. ft. 2,262 181 225
Based on the City’s Traffic Impact Guidelines, a Traffic Impact Analysis (TIA) is not required because the project would not generate greater than 50 trips in any peak hour.
Parking Demand Analysis
The Code-required parking and Low Income Density Bonus Parking requirements are calculated for the project site below:
Proposed Land Use Quantity Parking Rate Parking
Demand
City Code Parking Requirements
Multi-Family Residential 79 2 spaces/unit + 0.25
spaces/unit for guest 178
Low Income Density Bonus Parking Requirements (Gov. Code #65915) Studio and 1 Unit Apartments 32 1 space/unit 32
2-3 Unit Apartments 47 1.5 spaces/unit 71
Total Required by State Law 103
Proposed Parking Supply 127
Parking Surplus/Deficit +24
Based on the above, the applicant will provide sufficient parking supply based on State Code reduced parking requirements for projects with low income housing. No further parking study will be required.
T:\Planning\401 Rosecrans Ave-HighRose\Memo-Hi ghRose Dev Traffic summary 1-26-2022.docx