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CITY OE MIAMI
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SW 27TH LANE AND SW 28" STREET
EAST OF SW 26TH AVENUE
Prepared by
Marlin Engineering, inc.
October, 2004
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2191 NW 97 Avenue Miami, Florida 33172-2313 Tel. )305) 477-7575 Fax 1305) 477.7590
City o tam!
Street Closure Study
EXECUTIVE SUMMARY
This report presents the results of the street closure study for SW 27th Lane and SW
28th Street east of SW 26th Avenue, within the City of Miami. The study was initiated
following a request from a city resident.
Miami -Dade County, Public Works Department received a complaint from a city resident
about cut -through traffic and drivers' violation of one-way signs along SW 27th Lane and
SW 28th Street between SW 24th Avenue and SW 26th Avenue, where both streets are
designated for westbound traffic.
Data collection performed along SW 27th Lane and SW 28th Street includes:
• 72-Hour Machine Counts (6 Locations)
• 4-Hour Turning Movement Counts (2 Locations)
• License Plate Survey (4 Stations)
The traffic analysis indicated that SW 27th Lane experiences 29% cut -through traffic
during the AM peak period and 79% during the PM peak period. On the other hand,
SW 28th Street experiences 34% cut -through traffic during the AM peak period and 46%
during the PM peak period.
Furthermore, the 72-hour machine counts indicated that an average of 11 % of the daily
traffic along SW 27th Lane travel in the wrong direction of traffic (eastbound) and 7%
along SW 28th Street. In addition,_the_ 72-hour _machine counts indicated that the
average daily traffic along SW 27th Lane and SW 28th Street are 337 vehicles per day
(vpd) and 741 vpd, respectively.
Based on the Miami -Dade County Traffic Calming Standards, the volume criteria and at
least one of the other criteria such as 85th percentile speed, correctable accidents, cut -
through, pedestrian crossing volume, or 2/3 concurrence of the affected residents
should be met.
Although the volume criterion does not meet the County's standards, it is recommended
to close the two subject streets based on the high amount of the cut -through traffic and
the violation of the one-way street designation, which is considered to be an extremely
hazardous situation. In order not to affect the business of the offices and commercial
Marlin Engineering, Inc.
October 04
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MARLrivawrRI
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City of taint
Street Closure Study i1
properties on subject streets, closure location has been chosen east of the commercial
properties.
It should be noted that the subject street closures will not have any significant effect on
other neighborhood streets, as currently there is no other direct connection to SW 27th
Avenue other than US-1 and SW 26th Avenue.
Marlin Engineering, Inc.
October 04
MAR61
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Street Closure Study
TABLE OF CONTENTS
EXECUTIVE SUMMARY
1.0 INTRODUCTION 1
1.1 Purpose 1
1.2 Background 1
2.0 EXISTING TRAFFIC CONDITIONS 2
2.1 Roadway Characteristics 2
2.2 Land Use 3
2.3 Traffic Control Devices 4
3.0 TRAFFIC DATA COLLECTION AND ANALYSIS 4
3.1 Average Daily Traffic Volumes 4
3.2 Four -Hour Turning Movement Counts 4
3.3 Vehicle License Plate Survey 5
3.4 Residents Concerns 6
4.0 TRAFFIC FLOW MODIFICATION 7
5.0 CONCLUSION 10
LIST OF EXHIBITS
Exhibit 1 Study Area 2
Exhibit 2 Land Use 3
Exhibit 3 Average Daily Traffic Volumes 4
Exhibit 4 Turning Movement Counts .5
Exhibit 5 Summary of License Plate Survey on SW 27th Lane 6
Exhibit 6 Summary of License Plate Survey on SW 28th Street 6
Exhibit 7 License Plate Survey 8
Exhibit 8 Proposed Street Closure Locations 9
LIST OF APPENDIXES
APPENDIX A: Traffic Data Collections
APPENDIX B: License Plate Survey
APPENDIX C: Residential Requests
Marlin -Engineering, Inc.
October 04
P,141kft
City of Miami
Street Closure Shady
1.0 INTRODUCTION
1.1 Purpose
The purpose of this study is to present the findings of the street closure study for SW
27th Lane and SW 28th Street east of SW 26th Avenue. This study report includes traffic
data collection, traffic analysis, residents' concerns, and recommendations.
1.2 Background
This study was initiated following a request from a city resident. The request was based
on a complaint where cut -through traffic and drivers' violation of one-way street
(westbound) designation of both SW 27th Lane and SW 28th Street.
The study follows the Miami -Dade Guideline for Traffic Calming Measures. The study
includes the following locations:
• SW 27th Lane at SW 26th Avenue
• SW 27th Lane at SW 24th Avenue
• SW 28th Street at SW 26th Avenue
• SW 28th Street at SW 24th Avenue
• SW 24th Avenue south of SW 28th Street
• Lucaya Street south of SW 28th Street
Based on the scoping meeting between representatives from the City of Miami, Miami-
Dade County Public Works Department and Marlin Engineering, it was directed by the
County to perform the following data collection:
• Perform 4-hour turning movement counts (7:00 — 9:00 AM and 4:00 — 6:00 PM)
at:
o SW 27th Lane at SW 26th Avenue
o SW 28th Street at SW 26th Avenue.
• Perform 72-hour machine counts (both directions) at:
o SW 27th Lane east of SW 26th Avenue
o SW 27th Lane west of SW 24th Avenue
o SW 28th Street east of SW 26th Avenue
o SW 28th Street west of SW 24th Avenue
o SW 24th Avenue south of SW 28th Street
Marlin Engineering, Inc.
October 04
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Street Closure Study
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o Lucaya Street south of SW 28th Street
• Perform license plate survey at the following locations:
o SW 27th Lane east of SW 26th Avenue
o SW 27th Lane west of SW 24th Avenue
o SW 28th Street east of SW 26th Avenue
o SW 28th Street west of SW 24th Avenue
2.0 EXISTING TRAFFIC CONDITIONS
2.1 Roadway Characteristics
• SW 27th Lane and SW 28th Street are one-way westbound local residential streets
running in the east -west direction (see Exhibit 1).
Exhibit 1 — Study Area
• SW 27th Avenue south of US-1 is a minor arterial, while north of US-1 is a principal
arterial. US-1 is a principal arterial running in the southwest -northeast direction.
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• SW 27th Lane provides connectivity between SW 24th Avenue and SW 26th Avenue,
while SW 28th Street provides connectivity between SW 24th Avenue and SW 27th
Avenue.
• SW 24th Avenue, SW 26th Avenue and SW 27th Avenue have direct access to US-1.
2.2 Land Use
• The majority of the land use within the study area is residential (Single Family), with
the exception of a few multi -family land uses along US-1.
• In addition, there is a shopping center bounded by US-1, SW 27th Avenue, SW 28th
Street and SW 26th Avenue.
• There are a few office land uses along SW 26th Avenue (see Exhibit 2).
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Exhibit 2 — Land Use
Mar in ngineering, nc.
October 04
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Street Closure Study
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2.3 Traffic Control Devices
Currently, the intersections within the study area are controlled by stop signs. The
intersection of US-1 at SW 27th Avenue is controlled by a traffic signal. "ONE WAY"
signs (R6-1) are installed along SW 27th Lane and SW 28th Street. Speed limit signs are
not installed along both roadways.
3.0 TRAFFIC DATA COLLECTION AND ANALYSIS
3.1 Average Daily Traffic Volumes
• Six locations were selected to conduct 72-hour traffic volume counts.
• The traffic volume study results are presented in Exhibit 3 and Appendix A.
• From the 72-hour traffic volume counts, it could be concluded that SW 28th Street
carries more daily traffic volume than SW 27th Lane.
• 6% to 11 % of the daily traffic volume using both SW 27th Lane and SW 28th Street
go in the wrong direction.
• Wrong way traffic is more significant during off peak periods.
Exhibit 3 — Summary of 72-Hour Counts
Location
ADT
AM Peak Hour
PM Peak Hour
Volume
Time
Volume
Time
Lucaya St.IO SW 28th St.
278
23
8:30 AM
26
2:45 PM
SW 28 St. EIO SW 26 Ave.
740
55
11:15 AM
68
4:45 PM
SW 28th St. W/O SW 24th Ave.
599
45
11:45 AM
55
4:45 PM
SW 27th Lane W/O SW 24th Ave.
337
23
11:45 AM
32
5:00 PM
SW 27th Lane EIO SW 26th Ave.
328
26
8:15 AM
36
4:30 PM
SW 24th Ave. EIO SW 28th St.
555
48
9:00 AM
55
12:45 PM
3.2 Four -Hour Turning Movement Counts
• Two intersections were selected to conduct the peak periods turning movement
counts (TMC). Those intersections are SW 26th Avenue at SW 27th Lanes and SW
26th Avenue at SW 28th Street.
Marlin Engineering, Inc.
October 04
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Street Closure Study
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• The counts were conducted on a normal weekday from 7:00 AM to 9:00 AM and
from 4:00 PM to 6:00 PM.
• It is concluded that US-1 southbound left -turning vehicles use SW 24th Avenue and
SW 26th Avenue avoiding the long left -turn queues at US-1 and SW 27th Avenue.
• A portion of the wrong -way drivers are residents and service trucks.
• As the northbound of US-1 reaches saturation levels during the AM peak periods,
drivers go in the wrong direction to gain time, while driving at a high speed.
• During the peak periods, a few vehicles were driving in the wrong direction in order
to approach parking spaces located along the western portion of the concerned
roadways.
• Detailed TMC reports are presented in Appendix A and the peak hour traffic
volumes are presented in Exhibit 4.
Exhibit 4 — Summary of TMC
Location
Approach
AM
PM
Left
Through
Right
Left
Through
Right
SW 271h Lane and SW 26th Avenue
EB
8
0
23
12
0
21
WB
8
3
5
22
0
6
NB
5
146
2
2
4
110
3
SB
0
81
3
3
67
2
SW 28th Street and SW 26th Avenue
EB
143
1
0
114
1
3
WB
0
38
12
0
50
6
NB
1
2
0
1
1
0
SB
0
0
118
0
1
124
3.3 Vehicle License Plate Survey
• In order to assess the magnitude of the existence of the traffic concerns, a license
plate survey was conducted at four locations.
• The license plate survey was conducted at the same time of the TMC counts.
• It is concluded that SW 27th Lane experiences 32% of cut -through traffic during the
AM peak period and 65% during the PM peak period. On the other hand, SW 28th
Street experiences 56% of cut -through traffic during the AM peak period and 45%
during the PM peak period.
• Exhibit 5-7 shows the results of the license plate survey.
• It is concluded that the major traffic cut -through traffic is corning from the
southbound of SW 24th Avenue and heading southbound of SW 27th Avenue.
Marlin Engineering, Inc.
October 04
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Street Closure Study
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• Appendix B presents the detailed vehicle license plate results.
Exhibit 5 — Summary of License Plate Survey on SW 27th Lane
To
From
Going North on SW
26th Avenue
Going South on SW
26th Avenue
Shopping Plaza
AM
PM
AM
PM
AM
PM
NB of SW 24th
Avenue
0
0
2
2
0
0
SBofSW24th
Avenue
1
1
3
20
0
0
WB of SW 27th Lane
0
0
3
7
0
0
Exhibit 6 — Summary of License Plate Survey on SW 28th Street
To
From
Going North on SW 26th Avenue
Going West on SW 28th Street
AM
PM '
AM
PM
NB of SW 24th Avenue
2
4
3
3
SB of SW 24th Avenue
0
3
17
22
WB of SW 28th Street
1
0
8
8
3.4 Residents Concerns
During field observations, several residents were interviewed to identify the nature of
their traffic concerns. Also, residents were encouraged to submit their concerns via e-
mail. The following is a summary of the concerns received from the residents:
• Daily wrong -way traffic often drives at a dangerously high speed.
• Area residents drive the wrong -way as they feel entitled to short cut to gain access
to their properties and to avoid traffic.
• Cut -through traffic consists of speeders who are commuting to and from work at high
speeds.
• Concerns of future traffic generated by the new condo -hotel on SW 28th Street and
SW 26th Avenue.
Marlin Engineering, Inc.
October 04
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Street Closure Study
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• Residents often physically slow down speeders by stepping into the roadway when
children exist.
• Due to cut -through volume and no restrictions on roadway accessibility, several car
and home burglaries are experienced.
4.0 TRAFFIC FLOW MODIFICATION
• In order to solve the problem of traffic intrusion and wrong -way traffic on SW 27th
Lane and SW 28th Street, a street closure is one of the recommended solutions that
could resolve the problem.
• Although, traffic intrusions are more significant on SW 28th Street than that of SW
27th Lane, it is advised to implement the street closure recommendation of both
streets to avoid traffic diversion.
• In order not to cause any business damage to the offices and commercial properties,
street closure should be installed east of the commercial properties.
• The design of the street closure should provide access to pedestrians and bicyclists,
as well as emergency response vehicles.
• After closing the street, both SW 27th Lane and SW 28th Street need to be converted
to two-way traffic streets. Traffic conditions of the study area will be affected after
the street closure.
• After street closure, cut -through traffic would be completely eliminated from the
neighborhood area.
• Current cut -through traffic along SW 27th Lane and SW 28th Street will be diverted to
SW 26th Avenue and SW 27th Avenue, where commercial developments exist.
• It is not anticipated that additional traffic will be using Lucaya Street as it does not
connect to SW 27th Avenue.
• In addition, no additional traffic will be using SW 24th Avenue/ Calusa Street as
Calusa Street is in the northwest/southeast direction
Marlin Engineering, Inc.
October 04
MAR�Ip�%
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Exhibit 8 - Proposed
Street Closure Locations
itv o tamr
Street Closure Study
10
5.0 CONCLUSION
This report presents the results of the street closure study for SW 27th Lane and SW
28th Street east of SW 26th Avenue, within the City of Miami. The study was initiated.
following a request from a city resident.
Miami -Dade County, Public Works Department received a complaint from a city resident
about cut -through traffic and drivers' violation of one-way signs along SW 27th Lane and
SW 28th Street between SW 24th Avenue and SW 26th Avenue, where both streets are
designated for westbound traffic.
Data collection performed along SW 27th Lane and SW 28th Street includes:
• 72-Hour Machine Counts (6 Locations)
• 4-Hour Turning Movement Counts (2 Locations)
• License Plate Survey (4 Stations)
The traffic analysis indicated that SW 27th Lane experiences 29% cut -through traffic
during the AM peak period and 79% during the PM peak period. On the other hand,
SW 28th Street experiences 34% cut -through traffic during the AM peak period and 46%
during the PM peak period.
Furthermore, the 72-hour machine counts indicated that an average of 11 % of the daily
traffic along SW 27th Lane travel in the wrong direction of traffic (eastbound) and 7%
along SW 28th Street. In addition, the 72-hour machine counts indicated that the
average daily traffic along SW 27th Lane and SW 28th Street are 337 vehicles per day
(vpd) and 741 vpd, respectively.
Based on the Miami -Dade County Traffic Calming Standards, the volume criteria and at
least one of the other criteria such as 85th percentile speed, correctable accidents, cut -
through, pedestrian crossing volume, or 2/3 concurrence of the affected residents
should be met.
Although the volume criterion does not meet the County.'s standards, it is recommended
to close the two subject streets based on the high amount of the cut -through traffic and
the violation of the one-way street designation, which is considered to be an extremely
hazardous situation. In order not to affect the business of the offices and commercial
ar an ngineering, Inc.
October 04
MARU
c.,wNaimwaj
fly o iami
Street Closure Study
11
properties on subject streets, closure location has been chosen east of the commercial
properties.
It should be noted that the subject street closures will not have any significant effect on
other neighborhood streets as currently there is no other direct connection to SW 27th
Avenue other than US-1 and SW 26th Avenue.
Marlin Engineering, inc.
October 04
MARLM�RIH4