Final Report - VHB.com

experience moderate seasonal variation because they serve a combination of
commuter and recreational traffic. Group III roadways are defined as recreational
roadways and experience significant seasonal variation. Most of the Study Area
roadways (i.e., State Route 196, US Route 201, State Route 24, and Gurnet Road) are
considered Group I roadways. Pleasant Street (i.e., US Route 1) is considered a
Group II roadway and Harpswell Road (i.e., State Route 123) is considered a
combination of Group I and Group II roadways.
Weekday-evening peak-hour traffic volumes collected for this Feasibility Study were
adjusted to reflect the DHV (i.e., 30th-highest hour volume) using “Weekly Group
Mean Factors” provided by the MaineDOT. The 30th-highest hour approximates the
6th-highest week identified in the MaineDOT’s “Weekly Group Mean Factors,”
which generally corresponds to a summer condition. Some of the raw-count data
compiled for this Feasibility Study were collected during Summer 2010 conditions
and therefore did not require an adjustment to represent a DHV condition. Data
collected in other months were adjusted by as little as 2 percent and as much as 25
percent to represent the DHV condition.
Table 2.2-1 summarizes the automatic traffic-recorder-count data compiled for the
Study as well as the established 2009 DHV. Figure 2-3 shows the 2009 existing DHV
intersection traffic volumes.
Table 2.2-1. Existing Traffic-Volume Summary
Topsham Year AADT* 2009 DHV+
State Route 196 west of I-295 2007 17,700 1,600
State Route 196 east of I-295 2008 20,100 2,500
State Route 196 east of Topsham Fair Mall Road 2007 29,100 2,200
State Route 196 east of Main Street (US Route 201) 2008 18,200 1,900
Main Street (US Route 201) north of Eagles Way 2008 9,900 1,100
Main Street (US Route 201) south of State Route 196 2008 10,000 1,100
Main Street (US Route 201) north of Elm Street 2007 13,200 1,200
Brunswick Year AADT 2009 DHV
Main Street (State Route 24/US Route 201) at Topsham Town Line 2007 20,000 2,100
Pleasant Street (US Route 1) west of Church Street 2006 25,500 2,500
US Route 1 Eastbound east of I-295 2009 11,500 NA
US Route 1 Westbound east of I-295 2009 10,800 NA
Pleasant Street west of Maine Street (State Route 24) 2009 6,500 900
US Route 1 Eastbound east of State Route 196 2007 22,900 2,020
US Route 1 Westbound east of State Route 196 2007 21,700 2,715
Bath Road (State Route 24) east of Maine Street 2009 16,600 1,300
Existing Conditions 30