Attachment_12A_Traffic_Impact_Study_Jan_2012.pdf

Attachment 8A

A.V. Bryan Courthouse

Alexandria, Virginia

INTRODUCTION

Scope of Study

Methodology

EXISTING CONDITIONS

Road Accessibility

Traffic and Pedestrian Counts with Field Observations

Existing Trip Generation, Distribution and Modal Split

Security Processing and Queuing Observations

Capacity Analysis

Pedestrians and Bicycles

Transit

Parking

FUTURE 2013 NO BUILD CONDITIONS (without Perimeter Security Improvements)

Land Use Growth and Planned Projects

Future 2013 No Build Traffic Projections

Future 2013 No Build Capacity Analysis

FUTURE 2013 BUILD CONDITIONS (with Perimeter Security Improvements)

Planned Network Improvements

Proposed Security Perimeter Features

Pedestrian Impacts

Parking Impacts

Transit Impacts

Future 2013 Build Traffic Projections

Future 2013 Build Capacity Analysis

Garage Entry Assessment

RECOMMENDATIONS

Proposed Perimeter Security Impacts and Recommended Mitigation Concept

CONCLUSIONS

Existing Conditions

Future No Build Conditions

Future Build Conditions: Perimeter Security Improvements (GSA)

Transportation Impact Study ii

TABLE OF CONTENTS

Traffic and Pedestrian Counts with Field Observations

Existing Trip Generation, Distribution and Modal Split

Processing and Queuing Observations

FUTURE 2013 NO BUILD CONDITIONS (without Perimeter Security Improvements)

Land Use Growth and Planned Projects

Future 2013 No Build Traffic Projections

Future 2013 No Build Capacity Analysis

FUTURE 2013 BUILD CONDITIONS (with Perimeter Security Improvements)

Planned Network Improvements

Proposed Security Perimeter Features d Traffic Projections

Future 2013 Build Capacity Analysis

Proposed Perimeter Security Impacts and Recommended Mitigation Concept

Future Build Conditions: Perimeter Security Improvements (GSA)

January 2012

FUTURE 2013 NO BUILD CONDITIONS (without Perimeter Security Improvements)

LIST OF FIGURES

Figure 1: Site Location

Figure 2: TIS Study Area Intersections and Surrounding Roadway Network

Figure 3: A.V. Bryan Courthouse Existing Site Access

Figure 4: Lane Configuration and

Figure 5: Existing Peak Hour Traffic Data

Figure 6: Existing Directional Distribution

Figure 7: City of Alexandria Bikeways Map

Figure 8: Transit Locations Map

Figure 9: Future 2013 No Build Peak Hour Traffic Projections

Figure 10: Existing and Proposed Mill Road/Jamieson Avenue Lane Configuration

Figure 11: Proposed Security Improvement Plan

Figure 12: Future 2013 Build Peak Hour Traffic Projections

LIST OF TABLES

Table 1 Existing Vehicle Trip Generation (Employees)

Table 2 Level of Service Threshold for Delay

Table 3 Existing Conditions Level of Service

Table 4 Future 2013 No Build Conditions Level of Service

Table 5 Future 2013 Build Conditions Level of Service

Table 6 Queue Length on Jamieson Avenue at Courthouse Driveway iii

2: TIS Study Area Intersections and Surrounding Roadway Network

3: A.V. Bryan Courthouse Existing Site Access

4: Lane Configuration and Traffic Control Measures

5: Existing Peak Hour Traffic Data

6: Existing Directional Distribution

Alexandria Bikeways Map

9: Future 2013 No Build Peak Hour Traffic Projections

Existing and Proposed Mill Road/Jamieson Avenue Lane Configuration

11: Proposed Security Improvement Plan

12: Future 2013 Build Peak Hour Traffic Projections

Table 1 Existing Vehicle Trip Generation (Employees)

Table 2 Level of Service Threshold for Delay

Table 3 Existing Conditions Level of Service

Table 4 Future 2013 No Build Conditions Level of Service

Table 5 Future 2013 Build Conditions Level of Service

Table 6 Queue Length on Jamieson Avenue at Courthouse Driveway

Existing and Proposed Mill Road/Jamieson Avenue Lane Configuration

INTRODUCTION

The following report summarizes the findings of the Transportation Impact Study (TIS) conducted on behalf of the U.S. General Services Administration (GSA) for the Albert V. Bryan

Bryan) Courthouse Perimeter Security Improvements. The A.V. Br

2100 Jamieson Avenue Alexandria, Virginia.

The A.V. Bryan Courthouse is located within the Eisenhower east section of Alexandria. Key areas generally surrounding the Eisenhower East section of Alexandria include Prince Georg

County, Maryland (via the Woodrow Wilson Memorial Bridge) to the east, Fairfax County to the south and west and the District of Columbia to the north map.

The A.V. Bryan Courthouse houses the US Marshals Servi

U.S. Attorney’s Office and is bounded by Jamieson Avenue to the north, Elizabeth Lane to the east and Mill Road to the west.

The purpose of this study is to assess potential transportation impacts associated with the p security improvements and identify potential mitigation measures. The security improvements would replace the temporary barriers with permanent security elements that are more in keeping with the urban design landscape of surrounding development w

Detailed perimeter security improvements are described in the Future 2013 Build Conditions (with

Proposed Security improvements) section of the report. Project completion is expected by 2013. In addition to addressing overall impacts to transportation operations in the area, the study evaluates queuing and addresses potential impacts to

Transportation on behalf of the U.S. General Services Administration (GSA) for the Albert V. Bryan

Courthouse Perimeter Security Improvements. The A.V. Bryan Courthouse is located at

2100 Jamieson Avenue Alexandria, Virginia.

is located within the Eisenhower east section of Alexandria. Key areas generally surrounding the Eisenhower East section of Alexandria include Prince Georg

County, Maryland (via the Woodrow Wilson Memorial Bridge) to the east, Fairfax County to the south and west and the District of Columbia to the north-east. Figure 1 provides a site location

The A.V. Bryan Courthouse houses the US Marshals Services (USMS), the U.S. Courts and the

U.S. Attorney’s Office and is bounded by Jamieson Avenue to the north, Elizabeth Lane to the east

The purpose of this study is to assess potential transportation impacts associated with the p security improvements and identify potential mitigation measures. The security improvements replace the temporary barriers with permanent security elements that are more in keeping with the urban design landscape of surrounding development within the City of Alexandria.

Detailed perimeter security improvements are described in the Future 2013 Build Conditions (with

Proposed Security improvements) section of the report. Project completion is expected by 2013. In l impacts to transportation operations in the area, the study evaluates queuing and addresses potential impacts to transit and pedestrian conditions.

on behalf of the U.S. General Services Administration (GSA) for the Albert V. Bryan (herein A.V.

yan Courthouse is located at is located within the Eisenhower east section of Alexandria. Key areas generally surrounding the Eisenhower East section of Alexandria include Prince George’s

County, Maryland (via the Woodrow Wilson Memorial Bridge) to the east, Fairfax County to the

1 provides a site location ces (USMS), the U.S. Courts and the

U.S. Attorney’s Office and is bounded by Jamieson Avenue to the north, Elizabeth Lane to the east

The purpose of this study is to assess potential transportation impacts associated with the proposed security improvements and identify potential mitigation measures. The security improvements replace the temporary barriers with permanent security elements that are more in keeping ithin the City of Alexandria.

Detailed perimeter security improvements are described in the Future 2013 Build Conditions (with

Proposed Security improvements) section of the report. Project completion is expected by 2013. In l impacts to transportation operations in the area, the study evaluates

Figure 1: Site Location

Scope of Study

The study has been prepared in accordance with City of Alexandria guidelines and procedures.

Per the request of the City of Alexandria, this study includes an assessment (Level of Service) of

Existing (2011), Future No Build (2013) and Future Build (2013

PM peak hours for the following intersections:

1. Mill Road/ Mandeville Lane Garage Entrance

2. Mill Road/ Jamieson Avenue

3. Jamieson Avenue/ A.V. Bryan Courthouse Garage Entrance

4. Jamieson Avenue/ Courthouse Square (North)

5. Jamieson Avenue/ Dulany Street

6. Ballenger Avenue / Courthouse Square (North)

7. Elizabeth Lane/ A.V. Bryan Courthouse Garage Entrance

8. Elizabeth Lane/ Eisenhower Avenue

9. Eisenhower Avenue/ Mill Road

10. Eisenhower Avenue/ Mill Race Lane

11. Jamieson Avenue/ Courthouse Square South

12. Courthouse Square South/ Elizabeth Lane

Figure 2 shows the TIS study area intersections and the surrounding roadway network.

is based on the following assumptions:

• Proposed Security improvements would

• There are no foreseen increases in daily activity and/or employee population associated with the A.V. Bryan Courthouse at this time

• There will be no increase in existing parking supply or demand for the A.V. Bryan

Courthouse

• The proposed improvements (by the City of Alexandria) to the intersection of Mill Road at

Eisenhower Avenue would occur prior to the implementation of the perimeter security improvements in 2013. Proposed improvements to the intersection of Mill Road at

Jamieson Avenue would occur concurrently or subsequent to the implementation of the perimeter security improvements in 2013.

Methodology

Data collection efforts including selected observation dates and selected count periods were approved by the City of Alexandria.

Analysis was conducted for three scenarios including Existing Conditions (2011), Future 2013 No

Build and Future 2013 Build with perimeter security improvements. The Highway Capacity

Manual 2000 (HCM) methodology was employed through SYNCHRO version 7.0 and Level of Service (LOS) analysis.

Per the request of the City of Alexandria, this study includes an assessment (Level of Service) of

Existing (2011), Future No Build (2013) and Future Build (2013) traffic conditions for AM and

PM peak hours for the following intersections:

Mill Road/ Mandeville Lane Garage Entrance

Mill Road/ Jamieson Avenue

Jamieson Avenue/ A.V. Bryan Courthouse Garage Entrance

Jamieson Avenue/ Courthouse Square (North) n Avenue/ Dulany Street

Ballenger Avenue / Courthouse Square (North)

Elizabeth Lane/ A.V. Bryan Courthouse Garage Entrance

Elizabeth Lane/ Eisenhower Avenue

Eisenhower Avenue/ Mill Road

Eisenhower Avenue/ Mill Race Lane

Jamieson Avenue/ Courthouse Square South

Courthouse Square South/ Elizabeth Lane

2 shows the TIS study area intersections and the surrounding roadway network.

is based on the following assumptions:

Proposed Security improvements would be completed by 2013

There are no foreseen increases in daily activity and/or employee population associated with the A.V. Bryan Courthouse at this time

There will be no increase in existing parking supply or demand for the A.V. Bryan sed improvements (by the City of Alexandria) to the intersection of Mill Road at

Eisenhower Avenue would occur prior to the implementation of the perimeter security improvements in 2013. Proposed improvements to the intersection of Mill Road at venue would occur concurrently or subsequent to the implementation of the perimeter security improvements in 2013.

Data collection efforts including selected observation dates and selected count periods were approved by the City of Alexandria.

Analysis was conducted for three scenarios including Existing Conditions (2011), Future 2013 No

Build and Future 2013 Build with perimeter security improvements. The Highway Capacity

Manual 2000 (HCM) methodology was employed through SYNCHRO version 7.0 and Level of Service (LOS) analysis.

Per the request of the City of Alexandria, this study includes an assessment (Level of Service) of

) traffic conditions for AM and

2 shows the TIS study area intersections and the surrounding roadway network. This study

There are no foreseen increases in daily activity and/or employee population associated

There will be no increase in existing parking supply or demand for the A.V. Bryan sed improvements (by the City of Alexandria) to the intersection of Mill Road at

Eisenhower Avenue would occur prior to the implementation of the perimeter security improvements in 2013. Proposed improvements to the intersection of Mill Road at venue would occur concurrently or subsequent to the implementation of the

Data collection efforts including selected observation dates and selected count periods were

Analysis was conducted for three scenarios including Existing Conditions (2011), Future 2013 No-

Build and Future 2013 Build with perimeter security improvements. The Highway Capacity

Manual 2000 (HCM) methodology was employed through SYNCHRO version 7.0 for all capacity

Figure 2: TIS Study Area Intersections and Surrounding Roadway Network

2: TIS Study Area Intersections and Surrounding Roadway Network

EXISTING CONDITIONS

Road Accessibility

A.V. Bryan Courthouse is situated in the Eisenhower East section of Alexandria, Regional access to the A.V. Bryan Courthouse is provided from the Capital Beltway (Interstate

495), Route 1 (Henry and Patrick Streets), Washington Street

Local access is provided by Eisenhower Avenue, Mill Road and Dulany Street. Jamieson Avenue and Elizabeth Lane provide direct access to the A.V. Bryan Courthouse parking garages which are used by employees only. An illustration of the existing site acces

The following section includes a description of the study area roadways.

the Functional Classification of each roadway.

the Federal Highway Administration

Administration (FHWA) defines Functional classification highways are grouped into classes or systems according to the character of traffic service that they are intended to provide. Arterials longest uninterrupted distance, with some degree of access control. Collector roadways provides a less highly developed level of service at a lower speed for from local roads and connecting them with arterials. Local Streets consist of all roads not defined as arterials or collectors; primarily provides access to land with little or no through movement.

• Eisenhower Avenue is classified as an urban minor arterial by the Virginia Highway

Functional Classification System extends from the Holland Avenue traffic circle (in the east) to the intersection with South

Van Dorn Street to the west. Daily traffic through the study area is 14,000 day. Curbside parking is permitted along various sections of the corridor. The speed limit is 25 miles per hour.

• Mill Road is a four to five lane urban collector that borde the west. South of the A.V. Bryan Courthouse, Mill Road provides a direct connection to and from the Eisenhower Avenue I of the roadway. The speed limit is 25 miles per

Source: FHWA Functional Classification Guidelines

Source: Virginia Highway Functional Classification, City of Alexandria, 2005 Functional Classification

Map Source: 2009 Virginia Department of Transportation Daily Traffic Volume Estimates

A.V. Bryan Courthouse is situated in the Eisenhower East section of Alexandria, Regional access to the A.V. Bryan Courthouse is provided from the Capital Beltway (Interstate

495), Route 1 (Henry and Patrick Streets), Washington Street and Duke Street.

Local access is provided by Eisenhower Avenue, Mill Road and Dulany Street. Jamieson Avenue and Elizabeth Lane provide direct access to the A.V. Bryan Courthouse parking garages which are used by employees only. An illustration of the existing site access is shown in Figure a description of the study area roadways. The description includes the Functional Classification of each roadway. Virginia Department of Transportation reference the Federal Highway Administration functional classification guidelines. The Federal Highway

Administration (FHWA) defines Functional classification as the process by which streets and highways are grouped into classes or systems according to the character of traffic service that they ntended to provide. Arterials provide the highest level of service at the greatest speed for the longest uninterrupted distance, with some degree of access control. Collector roadways provides a less highly developed level of service at a lower speed for shorter distances by collecting traffic from local roads and connecting them with arterials. Local Streets consist of all roads not defined as arterials or collectors; primarily provides access to land with little or no through movement.

is classified as an urban minor arterial by the Virginia Highway

Functional Classification System . The roadways transitions from four to six lanes and extends from the Holland Avenue traffic circle (in the east) to the intersection with South

Street to the west. Daily traffic through the study area is 14,000 day. Curbside parking is permitted along various sections of the corridor. The speed limit is a four to five lane urban collector that borders the A.V. Bryan Courthouse to the west. South of the A.V. Bryan Courthouse, Mill Road provides a direct connection to and from the Eisenhower Avenue I-495 connector ramps. Parking is prohibited along most of the roadway. The speed limit is 25 miles per hour.

Source: FHWA Functional Classification Guidelines

Source: Virginia Highway Functional Classification, City of Alexandria, 2005 Functional Classification

Source: 2009 Virginia Department of Transportation Daily Traffic Volume Estimates

A.V. Bryan Courthouse is situated in the Eisenhower East section of Alexandria, Virginia.

Regional access to the A.V. Bryan Courthouse is provided from the Capital Beltway (Interstate 95/

Local access is provided by Eisenhower Avenue, Mill Road and Dulany Street. Jamieson Avenue and Elizabeth Lane provide direct access to the A.V. Bryan Courthouse parking garages which are

Figure 3.

The description includes

Virginia Department of Transportation references

The Federal Highway as the process by which streets and highways are grouped into classes or systems according to the character of traffic service that they provide the highest level of service at the greatest speed for the longest uninterrupted distance, with some degree of access control. Collector roadways provides a shorter distances by collecting traffic from local roads and connecting them with arterials. Local Streets consist of all roads not defined as arterials or collectors; primarily provides access to land with little or no through movement.

is classified as an urban minor arterial by the Virginia Highway

. The roadways transitions from four to six lanes and extends from the Holland Avenue traffic circle (in the east) to the intersection with South

Street to the west. Daily traffic through the study area is 14,000 vehicles per day. Curbside parking is permitted along various sections of the corridor. The speed limit rs the A.V. Bryan Courthouse to the west. South of the A.V. Bryan Courthouse, Mill Road provides a direct connection to

495 connector ramps. Parking is prohibited along most

Source: Virginia Highway Functional Classification, City of Alexandria, 2005 Functional Classification

• Jamieson Avenue is a two lane local roadway.

Jamieson Avenue (along the northern border of the site) enforcement vehicles are permitted parking (adjacent to the existing Jersey bar the right of way) Monday through Friday from 6:00am to 7:00pm. Jamieson Avenue provides access to the Courthouse garage. The speed limit is 25 miles per hour.

• Elizabeth Lane is a local roadway that runs north

Eisenhower Avenue. The two lane roadway provides access to the A.V. Bryan Courthouse garage and the West public parking garage facility along the east side of the street. Two hour “pay to park” spaces are provided on either side of the street (near Eisenho

Avenue).

• Courthouse Square is a two segment roadway which is separated by the park area fronting the main A.V. Bryan Courthouse entrance. Vehicle access is closed to the public along the westernmost segment of the road, directly in front of the A.V.

(Courthouse Square South). The easternmost segment (Courthouse Square North) is open to two-way through traffic and extends north to the intersection with Jamieson Avenue and south to the intersection with Ballenger Avenue.

• Ballenger Avenue is a local east

Avenue to the east to the Elizabeth Lane/ Courthouse Square intersection to the west. Curb parking is permitted along most of the roadway.

• Mandeville Lane provides access to the surface parking lot. The parking lot services the Hoffman movie theatre and surrounding office buildings.

• Dulany Street is a north-south four to five lane local roadway. The roadway extends from

Duke Street to the north and terminates at the U.S. Patent and Trademark Office. The northbound and southbound sections of the roadway are divided by a median.

• Mill Race Lane is a two-provide access to several proposed developments in the future.

Figure 4 illustrates existing lane configuration and traffic control measures at each study area intersection.

is a two lane local roadway. Curbside parking is prohibited

Jamieson Avenue (along the northern border of the site) for the general public. Law enforcement vehicles are permitted parking (adjacent to the existing Jersey bar the right of way) Monday through Friday from 6:00am to 7:00pm. Jamieson Avenue provides access to the Courthouse garage. The speed limit is 25 miles per hour.

is a local roadway that runs north-south from Courthouse Square to isenhower Avenue. The two lane roadway provides access to the A.V. Bryan Courthouse garage and the West public parking garage facility along the east side of the street. Two hour “pay to park” spaces are provided on either side of the street (near Eisenho is a two segment roadway which is separated by the park area fronting the main A.V. Bryan Courthouse entrance. Vehicle access is closed to the public along the westernmost segment of the road, directly in front of the A.V. Bryan Courthouse

(Courthouse Square South). The easternmost segment (Courthouse Square North) is open to way through traffic and extends north to the intersection with Jamieson Avenue and south to the intersection with Ballenger Avenue.

is a local east-west Street that runs from the intersection with Holland

Avenue to the east to the Elizabeth Lane/ Courthouse Square intersection to the west. Curb parking is permitted along most of the roadway.

provides access to the Hoffman Town Center garage and an adjacent surface parking lot. The parking lot services the Hoffman movie theatre and surrounding south four to five lane local roadway. The roadway extends from he north and terminates at the U.S. Patent and Trademark Office. The northbound and southbound sections of the roadway are divided by a median.

-lane local street. The southern approach of the intersection will veral proposed developments in the future.

4 illustrates existing lane configuration and traffic control measures at each study area urbside parking is prohibited along for the general public. Law enforcement vehicles are permitted parking (adjacent to the existing Jersey barrier within the right of way) Monday through Friday from 6:00am to 7:00pm. Jamieson Avenue provides access to the Courthouse garage. The speed limit is 25 miles per hour.

south from Courthouse Square to isenhower Avenue. The two lane roadway provides access to the A.V. Bryan Courthouse garage and the West public parking garage facility along the east side of the street. Two hour “pay to park” spaces are provided on either side of the street (near Eisenhower is a two segment roadway which is separated by the park area fronting the main A.V. Bryan Courthouse entrance. Vehicle access is closed to the public along the

Bryan Courthouse

(Courthouse Square South). The easternmost segment (Courthouse Square North) is open to way through traffic and extends north to the intersection with Jamieson Avenue and west Street that runs from the intersection with Holland

Avenue to the east to the Elizabeth Lane/ Courthouse Square intersection to the west. Curb

Hoffman Town Center garage and an adjacent surface parking lot. The parking lot services the Hoffman movie theatre and surrounding south four to five lane local roadway. The roadway extends from he north and terminates at the U.S. Patent and Trademark Office. The northbound and southbound sections of the roadway are divided by a median.

lane local street. The southern approach of the intersection will

4 illustrates existing lane configuration and traffic control measures at each study area

Figure 3: A.V. Bryan Courthouse Existing Site Access

3: A.V. Bryan Courthouse Existing Site Access

* Note: Lane configuration is not shown for intersections 11 and 12 since Courthouse Square is currently closed

Figure 4: Lane Configuration and Traffic Control Measure for intersections 11 and 12 since Courthouse Square is currently closed

4: Lane Configuration and Traffic Control Measures for intersections 11 and 12 since Courthouse Square is currently closed

Traffic and Pedestrian Counts with Field Observations

Traffic data (turning movement counts), pedestrian counts, and bicycle during the City’s peak travel periods from 7:00

7:00 PM (pm peak) on the following dates:

• Wednesday, May 11, 2011

• Thursday, May 12, 2011

• Thursday, June 2, 2011

• Wednesday, October 26, 2011

• Wednesday, November 2, 2011

Based on data collected during these time periods, the system peak hours were determined to be

7:45 am to 8:45 am and 5:00 pm to 6:00 pm. Peak hour traffic data is shown in processing and queuing observation morning arrival and evening departure period.

Existing Trip Generation, Distribution and Modal Split

A.V. Bryan Courthouse is open weekdays from 8:00 am to 5:00 pm public transit or walk/bike to the A.V. Bryan Courthouse. Employees whom drive to work are provided a key card to access the garage at all times. Existing site vehicle trips (employee trip generation only) captured during the morning (7:00 to 9:00 am) and even peak hours at the A.V. Bryan Courthouse garage entrances does not account for visitor trip generation. Visitors are encouraged to take public transit to the site and enter the A.V. Bryan Courthouse

Square.

Table 1 Existing Vehicle Trip Generation (Employees)

Jamieson Avenue/ A.V. Bryan

Courthouse Garage Entrance

Elizabeth Lane / A.V. Bryan

Courthouse Garage Entrance

Total

As shown in Table 1, the A.V. Bryan Courthouse generated a total of 100 am peak hour vehicle trips and 84 pm peak hour vehicle trips. Existing directional distribution is shown in

This was developed using the inbound/outbound site trips and traffic data collected at study area

PM peak hour data shown for the Eisenhower Avenue/Mill Road intersection is based on an additional one hour count that was conducted on Wednesday, December 14, 2011 in o volumes on Eisenhower Avenue.

On Friday, the Courthouse is open from 7:45 am to 5:00 pm.

Traffic and Pedestrian Counts with Field Observations

Traffic data (turning movement counts), pedestrian counts, and bicycle counts during the City’s peak travel periods from 7:00 AM to 9:00 AM (am peak) and from 4:00 on the following dates:

Wednesday, May 11, 2011

Wednesday, October 26, 2011

Wednesday, November 2, 2011

Based on data collected during these time periods, the system peak hours were determined to be

7:45 am to 8:45 am and 5:00 pm to 6:00 pm. Peak hour traffic data is shown in Figure processing and queuing observations were conducted on Thursday, June 2, 2011 during the morning arrival and evening departure period.

Existing Trip Generation, Distribution and Modal Split

A.V. Bryan Courthouse is open weekdays from 8:00 am to 5:00 pm . Employees drive, carpool, use transit or walk/bike to the A.V. Bryan Courthouse. Employees whom drive to work are provided a key card to access the garage at all times. Existing site vehicle trips (employee trip generation only) captured during the morning (7:00 to 9:00 am) and evening (4:00 to 7:00 pm) peak hours at the A.V. Bryan Courthouse garage entrances are summarized in Table 1. Table 1 does not account for visitor trip generation. Visitors are encouraged to take public transit to the site and enter the A.V. Bryan Courthouse through the building's main entrance on Courthouse

Table 1 Existing Vehicle Trip Generation (Employees)

AM Peak PM Peak

IN OUT TOTAL IN OUT

Jamieson Avenue/ A.V. Bryan

60 3 63 1

Bryan

34 3 37 0

94 6 100 1

A.V. Bryan Courthouse generated a total of 100 am peak hour vehicle trips and 84 pm peak hour vehicle trips. Existing directional distribution is shown in

This was developed using the inbound/outbound site trips and traffic data collected at study area

PM peak hour data shown for the Eisenhower Avenue/Mill Road intersection is based on an additional one hour count that was conducted on Wednesday, December 14, 2011 in order to validate and balance traffic

On Friday, the Courthouse is open from 7:45 am to 5:00 pm.

counts were conducted and from 4:00 PM to

Based on data collected during these time periods, the system peak hours were determined to be

Figure 5 . Security s were conducted on Thursday, June 2, 2011 during the

. Employees drive, carpool, use transit or walk/bike to the A.V. Bryan Courthouse. Employees whom drive to work are provided a key card to access the garage at all times. Existing site vehicle trips (employee trip ing (4:00 to 7:00 pm) summarized in Table 1. Table 1 does not account for visitor trip generation. Visitors are encouraged to take public transit to the through the building's main entrance on Courthouse

PM Peak

OUT TOTAL

48 49

35 35

83 84

A.V. Bryan Courthouse generated a total of 100 am peak hour vehicle trips and 84 pm peak hour vehicle trips. Existing directional distribution is shown in Figure 6.

This was developed using the inbound/outbound site trips and traffic data collected at study area

PM peak hour data shown for the Eisenhower Avenue/Mill Road intersection is based on an additional one rder to validate and balance traffic intersections. Since there are no foreseen increases or decreases in employee population or parking, it is assumed existing and future vehicular tr existing conditions.

it is assumed existing and future vehicular trip generation and distribution will remain as under ip generation and distribution will remain as under

Figure 5: Existing Peak Hour Traffic Data

5: Existing Peak Hour Traffic Data

* Directional distribution shows AM inbound and PM outbound

Figure 6: Existing Directional Distribution

* Directional distribution shows AM inbound and PM outbound

6: Existing Directional Distribution

Security Processing and Queuing

Security processing and queuing

Jamieson Avenue. Security processing and

Avenue garage entrance to determine improvements. During morning observations, a maximum vehicle queue, or sequence of vehicles awaiting their turn to proceed into the garage entrance, was four vehicles. These approached the A.V. Bryan Courthous vehicles were queued within the A.V. Bryan Courthouse property (one at the access card scanner and one within the Jersey barrier) and the remaining two vehicles were queued on Jamieson

Avenue. The four queued vehicles accessing the A.V. Bryan Courthouse created a traffic queue that extended back to Mill Road (12 total vehicles). Queuing occurred between 7:30am and

7:45am and lasted for approximately 40 seconds.

The queue lasted 10 to 40 seconds

No queuing was observed along Elizabeth Lane

Capacity Analysis

To assess existing traffic conditions, traffic data and a number of inputs are entered into traffic analysis software and evaluated to provid include parameters such as the number of travel lanes and traffic signal timing. The software outputs a LOS designation. LOS is the measure of the average control (i.e. stop sign or traffic signal) delay experienced by all motorists arriving to an intersection. There are six representative levels of service defined for intersections and they are designated using letters A through F, with

LOS A representing the best operating conditions and LOS F intersection is not included in the measure used to calculate LOS. Level of Service is defined separately for signalized intersections and unsignalized intersections. For signalized intersections, delay is evaluated for the overall intersection; while at unsignalized intersections delay is analyzed for each movement separately (i.e. northbound, southbound, eastbound or westbound traffic). The threshold for intersection LOS is shown in Table 2.

Queuing Observations and queuing was observed at A.V. Bryan Courthouse garage entrances on

Security processing and queuing observations were conducted at Jamieson to determine potential impacts related to proposed perimeter security

During morning observations, a maximum vehicle queue, or sequence of vehicles awaiting their turn to proceed into the garage entrance, was four vehicles. These approached the A.V. Bryan Courthouse traveling east making a right turn into the driveway. Two vehicles were queued within the A.V. Bryan Courthouse property (one at the access card scanner and one within the Jersey barrier) and the remaining two vehicles were queued on Jamieson he four queued vehicles accessing the A.V. Bryan Courthouse created a traffic queue that extended back to Mill Road (12 total vehicles). Queuing occurred between 7:30am and

7:45am and lasted for approximately 40 seconds. Queuing also occurred from 8:00am s.

No queuing was observed along Elizabeth Lane.

To assess existing traffic conditions, traffic data and a number of inputs are entered into traffic analysis software and evaluated to provide a Level of Service (LOS) for each intersection. Inputs include parameters such as the number of travel lanes and traffic signal timing. The software outputs a LOS designation. LOS is the measure of the average control (i.e. stop sign or traffic

) delay experienced by all motorists arriving to an intersection. There are six representative levels of service defined for intersections and they are designated using letters A through F, with

LOS A representing the best operating conditions and LOS F representing the worst. Safety of the intersection is not included in the measure used to calculate LOS. Level of Service is defined separately for signalized intersections and unsignalized intersections. For signalized intersections, for the overall intersection; while at unsignalized intersections delay is analyzed for each movement separately (i.e. northbound, southbound, eastbound or westbound traffic). The threshold for intersection LOS is shown in Table 2.

was observed at A.V. Bryan Courthouse garage entrances on observations were conducted at Jamieson perimeter security

During morning observations, a maximum vehicle queue, or sequence of vehicles awaiting their turn to proceed into the garage entrance, was four vehicles. These vehicles e traveling east making a right turn into the driveway. Two vehicles were queued within the A.V. Bryan Courthouse property (one at the access card scanner and one within the Jersey barrier) and the remaining two vehicles were queued on Jamieson he four queued vehicles accessing the A.V. Bryan Courthouse created a traffic queue that extended back to Mill Road (12 total vehicles). Queuing occurred between 7:30am and

Queuing also occurred from 8:00am to 8:45am.

To assess existing traffic conditions, traffic data and a number of inputs are entered into traffic e a Level of Service (LOS) for each intersection. Inputs include parameters such as the number of travel lanes and traffic signal timing. The software outputs a LOS designation. LOS is the measure of the average control (i.e. stop sign or traffic

) delay experienced by all motorists arriving to an intersection. There are six representative levels of service defined for intersections and they are designated using letters A through F, with representing the worst. Safety of the intersection is not included in the measure used to calculate LOS. Level of Service is defined separately for signalized intersections and unsignalized intersections. For signalized intersections, for the overall intersection; while at unsignalized intersections delay is analyzed for each movement separately (i.e. northbound, southbound, eastbound or westbound traffic). The

Table 2 Level of Service Threshold for Delay

Existing conditions Level of Service (LOS) capacity analyses were conducted for the study area intersections using SYNCHRO 7 software. LOS “D” is acceptable within the City of Alexandria.

Table 3 shows the LOS result for the study area intersections unde

Table 3 Existing Conditions Level of Service

Mill Road/ Mandeville Lane Garage

Entrance

2 Mill Road/ Jamieson Avenue

Jamieson Avenue/ A.V. Bryan

Courthouse Garage Entrance *

4 Jamieson Avenue/ Courthouse Square*

5 Jamieson Avenue/ Dulany Street

6 Ballenger Avenue/ Courthouse Square*

Elizabeth Lane/ A.V. Bryan Courthouse

Garage Entrance *

8 Eisenhower Avenue/ Elizabeth Lane

9 Eisenhower Avenue/ Mill Road

10 Eisenhower Avenue/ Mill Race Lane

*Unsignalized intersection - LOS reflects worst minor approach

As Table 3 indicates, all study area intersections operate at acceptable Levels of Service during both the AM and PM peak hours with the exception of the Jamieson Avenue/ Dulany Street intersection during the AM peak hour during the PM peak hour. Field observations and analysis results indicate the following:

• Congestion at the Dulany Street/ Jamieson Avenue intersection. The intersection operates at a LOS “E” with an average delay on 70.3 seconds per vehicle.

configuration includes a single left vehicles make a left turn thereby delaying eastbound through and eastbound right turning traffic. Left turning traffic is not related to the A.V. Brya

Level of Service Threshold for Delay

(seconds/vehicle)

LOS Signalized

A 0-10 sec

B > 10-20 sec

C > 20-35 sec

D > 35-55 sec

E > 55-80 sec

F > 80 sec

Level of Service Threshold for Delay intersections using SYNCHRO 7 software. LOS “D” is acceptable within the City of Alexandria.

Table 3 shows the LOS result for the study area intersections under existing conditions.

Table 3 Existing Conditions Level of Service

AM Peak

LOS

Delay

(sec/vehicles) LOS

Mill Road/ Mandeville Lane Garage

A 3.3 A

Mill Road/ Jamieson Avenue B 13.6 B

Avenue/ A.V. Bryan

Courthouse Garage Entrance * C 17.1 C

Jamieson Avenue/ Courthouse Square* D 32.1 E

Jamieson Avenue/ Dulany Street E 70.3 C

Ballenger Avenue/ Courthouse Square* A 7.6 A

Elizabeth Lane/ A.V. Bryan Courthouse

A 8.7 B

Eisenhower Avenue/ Elizabeth Lane A 4.4 B

Eisenhower Avenue/ Mill Road C 29.2 C

Eisenhower Avenue/ Mill Race Lane A 4.7 A

LOS reflects worst minor approach indicates, all study area intersections operate at acceptable Levels of Service during both the AM and PM peak hours with the exception of the Jamieson Avenue/ Dulany Street intersection during the AM peak hour and the Jamieson Avenue/ Courthouse Square

. Field observations and analysis results indicate the following:

Congestion at the Dulany Street/ Jamieson Avenue intersection. The intersection operates at a LOS “E” with an average delay on 70.3 seconds per vehicle. The eastbound lane configuration includes a single left-through-right lane. In the morning peak hour, 34 vehicles make a left turn thereby delaying eastbound through and eastbound right turning

Left turning traffic is not related to the A.V. Bryan Courthouse.

Level of Service Threshold for Delay

Unsignalized

0-10 sec

> 10-15 sec

> 15-25 sec

> 25-35 sec

> 35-50 sec

> 50 sec intersections using SYNCHRO 7 software. LOS “D” is acceptable within the City of Alexandria.

r existing conditions.

PM Peak

LOS

Delay

(sec/vehicles)

8.2

11.4

15.8

37.6

25.4

8.0

11.4

14.0

21.2

4.0 indicates, all study area intersections operate at acceptable Levels of Service during both the AM and PM peak hours with the exception of the Jamieson Avenue/ Dulany Street and the Jamieson Avenue/ Courthouse Square intersection

. Field observations and analysis results indicate the following:

Congestion at the Dulany Street/ Jamieson Avenue intersection. The intersection operates

The eastbound lane right lane. In the morning peak hour, 348 vehicles make a left turn thereby delaying eastbound through and eastbound right turning

• The minor approach (Courthouse Square) at the Courthouse Square/ Jamieson Avenue intersection only has one lane to accommodate left and right turning traffic. There is also a has a substantial number of pedestrian crossing at this intersection thus the rea operating conditions at a LOS “E” during PM peak hour.

• Queuing and congestion observed along the southbound approach at Eisenhower Avenue and Mill Road during the pm peak hour.

LOS “C”, the southbound approach operates at LOS “D”.

Pedestrians and Bicycles

Pedestrian access to the A.V. Bryan Courthouse is provided via sidewalks along Courthouse

Square, Elizabeth Lane and Jamieson Avenue.

Courthouse are as follows:

• Jamieson Avenue - 14 - foo

• Elizabeth Lane - 16 - foot

• Courthouse Square - 27 feet

Field observations showed sidewalk widths are adequate to carry existing pedestrian volumes. There is a slight grade change between the sidewalk and the driveway apron crossing

Jamieson Avenue garage entrance.

alerting motorists to stop to pedestrians. However, the loc of the garage ramp make it difficult for motorist exiting the garage to see pedestrians walking along the sidewalk.

Crosswalks and landings are provided, for crossing Elizabeth, at the intersection of Elizabeth L and Courthouse Square. Jersey barriers are stationed on the sidewalk along the west

Elizabeth Lane (from the corner of Courthouse Square to the vehicular garage entrance). In addition, there is a pedestrian crosswalk located on Elizabeth Lan

Square and the Guard booth at the Elizabeth Lane employee garage entrance.

Crosswalks and pedestrian signals are provided at all approaches of the intersections of Mill Road with Jamieson Avenue and Eisenhower Avenue. Cr at the following study area intersections:

• Eisenhower Avenue/ Elizabeth Lane intersection eastbound approach crossing Eisenhower

Avenue

• Dulany Street/ Jamieson Avenue intersection northbound approach crossing Du

Within the project vicinity, an off runs east-west from the Eisenhower Avenue Metrorail Station (southwest of the Courthouse) and extends west to the Holmes Run Parkway off

Jamieson Avenue (from Mill Road to Holland Lane), on

The minor approach (Courthouse Square) at the Courthouse Square/ Jamieson Avenue has a substantial number of pedestrian crossing at this intersection thus the rea operating conditions at a LOS “E” during PM peak hour.

Queuing and congestion observed along the southbound approach at Eisenhower Avenue and Mill Road during the pm peak hour. Although the overall intersection operates at a nd approach operates at LOS “D”.

Pedestrian access to the A.V. Bryan Courthouse is provided via sidewalks along Courthouse eth Lane and Jamieson Avenue. Sidewalk widths fronting the A.V. Bryan oot brick paved with five -foot planter box oot brick paved with a three -foot planter box

27 feet

Field observations showed sidewalk widths are adequate to carry existing pedestrian grade change between the sidewalk and the driveway apron crossing

Jamieson Avenue garage entrance. At the entrance to the A.V. Bryan Courthouse there is a sign alerting motorists to stop to pedestrians. However, the location of the security booth and the grade of the garage ramp make it difficult for motorist exiting the garage to see pedestrians walking

Crosswalks and landings are provided, for crossing Elizabeth, at the intersection of Elizabeth L and Courthouse Square. Jersey barriers are stationed on the sidewalk along the west

Elizabeth Lane (from the corner of Courthouse Square to the vehicular garage entrance). In addition, there is a pedestrian crosswalk located on Elizabeth Lane mid-block between Courthouse

Square and the Guard booth at the Elizabeth Lane employee garage entrance.

Crosswalks and pedestrian signals are provided at all approaches of the intersections of Mill Road with Jamieson Avenue and Eisenhower Avenue. Crosswalks are not provided along an approach at the following study area intersections:

Eisenhower Avenue/ Elizabeth Lane intersection eastbound approach crossing Eisenhower

Dulany Street/ Jamieson Avenue intersection northbound approach crossing Du

Within the project vicinity, an off-street bikeway is located on Eisenhower Avenue. The bikeway west from the Eisenhower Avenue Metrorail Station (southwest of the Courthouse) and extends west to the Holmes Run Parkway off-street bikeway. On-street bikeways are designated on ill Road to Holland Lane), on Eisenhower Avenue (from Mill Road to

The minor approach (Courthouse Square) at the Courthouse Square/ Jamieson Avenue has a substantial number of pedestrian crossing at this intersection thus the reason for

Queuing and congestion observed along the southbound approach at Eisenhower Avenue

Although the overall intersection operates at a

Pedestrian access to the A.V. Bryan Courthouse is provided via sidewalks along Courthouse

Sidewalk widths fronting the A.V. Bryan

Field observations showed sidewalk widths are adequate to carry existing pedestrian traffic grade change between the sidewalk and the driveway apron crossing

At the entrance to the A.V. Bryan Courthouse there is a sign ation of the security booth and the grade of the garage ramp make it difficult for motorist exiting the garage to see pedestrians walking

Crosswalks and landings are provided, for crossing Elizabeth, at the intersection of Elizabeth Lane and Courthouse Square. Jersey barriers are stationed on the sidewalk along the west-side of

Elizabeth Lane (from the corner of Courthouse Square to the vehicular garage entrance). In block between Courthouse

Crosswalks and pedestrian signals are provided at all approaches of the intersections of Mill Road osswalks are not provided along an approach

Eisenhower Avenue/ Elizabeth Lane intersection eastbound approach crossing Eisenhower

Dulany Street/ Jamieson Avenue intersection northbound approach crossing Dulany Street street bikeway is located on Eisenhower Avenue. The bikeway west from the Eisenhower Avenue Metrorail Station (southwest of the Courthouse) and street bikeways are designated on

Eisenhower Avenue (from Mill Road to

Holland Lane) and on Mill Road (from Jamieson Avenue to Eisenhower Avenue).

Alexandria Bikeway map within proximity of the A.V. Bryan Courthouse.

Figure 7: City of Alexandria Bikeways Map

As shown in Figure 7 a future trail notes the trail was expected to open in 2010. The trail has not yet bikeway improvement is unknown.

Holland Lane) and on Mill Road (from Jamieson Avenue to Eisenhower Avenue).

n proximity of the A.V. Bryan Courthouse.

7: City of Alexandria Bikeways Map a future trail is proposed on the Telegraph Road Interchange ramp. The map notes the trail was expected to open in 2010. The trail has not yet opened and status of the bikeway improvement is unknown.

Holland Lane) and on Mill Road (from Jamieson Avenue to Eisenhower Avenue). Figure 7 is the on the Telegraph Road Interchange ramp. The map opened and status of the

Transit

The study area is well served by a number of transit services including Washington Metropolitan

Area Transit Authority (WMATA) Metrorail, Virginia Railway Express, the Alexandria Dash

System Bus service and WMATA’s Richmond Highway Express (REX).

There are two Metrorail Stations within 0.5 mile

Metrorail Station on WMATA’s Yellow Line is located approximately 0.4 miles away. Access from the Eisenhower Metro Station is provided via sidewalks and crosswalks and eight minute walk to the A.V. Bryan Courthouse. The King Street Metrorail Station on WMATA’s

Yellow and Blue Lines is located northeast of the A.V. Bryan Courthouse and is approximately 0.5 miles away. From the King Street Metro Station, th

The Virginia Railway Express (VRE) and Amtrak Station has a stop within 0.5 miles of the A.V.

Bryan Courthouse. The stop is located at 110 Callahan Drive and is approximately a ten minute walk. The Station is adjacent to the King Street Metrorail Station.

WMATA Metrorail stations and the Amtrak Station are illustrated in

Bus systems servicing the project study area include the Alexandria Dash (AT7 and AT1) and the

Richmond Highway Express. Servi the route to also provide service along adjacent roadways.

Bus stops near the A.V. Bryan Courthouse

• Jamieson Avenue south-side

• Jamieson Avenue north-side ( across from Courthouse Square

• Mill Road west-side (just south of intersection with Jamieson Avenue) with bus shelter

• Mill Road east-side (bordering A.V. Bryan Courthouse to the west) with bus shelter

System Bus service and WMATA’s Richmond Highway Express (REX).

are two Metrorail Stations within 0.5 miles of the Courthouse. The Eisenhower Avenue

Metrorail Station on WMATA’s Yellow Line is located approximately 0.4 miles away. Access from the Eisenhower Metro Station is provided via sidewalks and crosswalks and eight minute walk to the A.V. Bryan Courthouse. The King Street Metrorail Station on WMATA’s

Yellow and Blue Lines is located northeast of the A.V. Bryan Courthouse and is approximately 0.5 away. From the King Street Metro Station, the A.V. Bryan Courthouse is a ten minute walk.

The Virginia Railway Express (VRE) and Amtrak Station has a stop within 0.5 miles of the A.V.

Bryan Courthouse. The stop is located at 110 Callahan Drive and is approximately a ten minute s adjacent to the King Street Metrorail Station.

WMATA Metrorail stations and the Amtrak Station are illustrated in Figure 8.

Bus systems servicing the project study area include the Alexandria Dash (AT7 and AT1) and the

Richmond Highway Express. Service extensions are planned for the AT6 line that would extend the route to also provide service along adjacent roadways.

Bus stops near the A.V. Bryan Courthouse are as follows:

side approaching Courthouse Square side ( across from Courthouse Square South) side (just south of intersection with Jamieson Avenue) with bus shelter side (bordering A.V. Bryan Courthouse to the west) with bus shelter of the Courthouse. The Eisenhower Avenue

Metrorail Station on WMATA’s Yellow Line is located approximately 0.4 miles away. Access from the Eisenhower Metro Station is provided via sidewalks and crosswalks and is a convenient eight minute walk to the A.V. Bryan Courthouse. The King Street Metrorail Station on WMATA’s

Yellow and Blue Lines is located northeast of the A.V. Bryan Courthouse and is approximately 0.5 e A.V.