Supplemental Report February 10, 2017 Supplement to the Midcounty Corridor Study February 10, 2017 Montgomery County DOT RK&K, LLP TABLE OF CONTENTS 1. INTRODUCTION ................................................................................................................................................................... 1-1 2. SUMMARY OF FINDINGS .................................................................................................................................................... 2-1 A. Study Objectives ............................................................................................................................................................ 2-1 B. Analysis Scenarios ......................................................................................................................................................... 2-1 C. Scenario Comparison ..................................................................................................................................................... 2-1 i. Vehicle-Miles Traveled (VMT) ................................................................................................................................ 2-1 ii. Person Throughput ................................................................................................................................................ 2-2 iii. Transit Mode Share ................................................................................................................................................ 2-3 iv. Travel Time ............................................................................................................................................................ 2-4 v. Intersection Operations .......................................................................................................................................... 2-6 D. Evaluation Metric Outcomes .......................................................................................................................................... 2-6 E. Key Findings .................................................................................................................................................................. 2-7 3. PROJECT BACKGROUND ................................................................................................................................................... 3-1 A. Overview of Upcounty Growth Plans and Infrastructure Needs ..................................................................................... 3-1 i. Clarksburg Plan and Development Progression .................................................................................................... 3-1 ii. Planned Major Transportation Improvements ........................................................................................................ 3-1 a. Corridor Cities Transitway (CCT) ................................................................................................................... 3-1 b. MD 355 Bus Rapid Transit (BRT) ................................................................................................................... 3-1 c. Interstate 270 Widening ................................................................................................................................. 3-2 d. MD 355 Widening ........................................................................................................................................... 3-2 e. Newcut Road (Little Seneca Parkway) Interchange at I-270 .......................................................................... 3-2 f. Watkins Mill Road Interchange at I-270 ......................................................................................................... 3-2 g. Observation Drive ........................................................................................................................................... 3-2 h. Goshen Road South ....................................................................................................................................... 3-3 i. Midcounty Highway (M-83) ............................................................................................................................. 3-3 B. MCS Study Purpose, Objectives, and Relationships to Other Studies .......................................................................... 3-3 C. Brief Review of M-83 ...................................................................................................................................................... 3-3 i. Element of Master Plans ........................................................................................................................................ 3-3 ii. Alternatives Studied and Recommendations ......................................................................................................... 3-4 a. MCS Project Development Timeline .............................................................................................................. 3-4 b. Alternatives Considered ................................................................................................................................. 3-5 D. Brief Review of BRT Studies .......................................................................................................................................... 3-5 i. Countywide Transit Corridors Functional Master Plan ........................................................................................... 3-5 ii. MD 355 Alternatives Analysis ................................................................................................................................ 3-6 a. Range of Alternatives North of MD 124 .......................................................................................................... 3-6 b. Alternative Selected for Midcounty Corridor Study Analysis .......................................................................... 3-6 4. METHODOLOGY ................................................................................................................................................................... 4-1 A. Assembly of Analysis Scenarios .................................................................................................................................... 4-1 i. Existing Conditions ................................................................................................................................................. 4-1 ii. Year 2040 No-Build Condition ................................................................................................................................ 4-1 iii. Scenario 1 – Year 2040 BRT with Alt 2/5 (Intersection Improvements) without M-83 ........................................... 4-1 iv. Scenario 2 – Year 2040 BRT with M-83 Reversible Two-Lane Option .................................................................. 4-2 v. Scenario 3 – Year 2040 No BRT with M-83 Alternative 9A .................................................................................... 4-2 B. Determination of Analysis Year and Associated Network and Land Use Conditions ..................................................... 4-7 C. Determination of Evaluation Metrics .............................................................................................................................. 4-7 i. Vehicle-Miles Traveled ........................................................................................................................................... 4-7 ii. Person Throughput ................................................................................................................................................ 4-7 iii. Travel Time ............................................................................................................................................................ 4-8 iv. Intersection Congestion ......................................................................................................................................... 4-9 D. Technical Analysis ....................................................................................................................................................... 4-10 i Supplement to the Midcounty Corridor Study February 10, 2017 Montgomery County DOT RK&K, LLP 5. RESULTS .............................................................................................................................................................................. 5-1 A. No-Build Condition ......................................................................................................................................................... 5-1 i. Vehicle-Miles Traveled (VMT) ................................................................................................................................ 5-1 ii. Person Throughput ................................................................................................................................................ 5-1 iii. Travel Time ............................................................................................................................................................ 5-1 iv. Intersection Delay .................................................................................................................................................. 5-3 B. Scenario 1 – BRT with Alt 2/5 & No M-83 .....................................................................................................................