07-29-08 Presentation E2Neighborhood "Mango Terrace"
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• INCORPORATED
k 1927
1-C)K1�
Traffic Study
South Miami ,Florida
Kimley -Horn
and Associates, Inc.
Introduction
To address traffic issues in the
"Mango Terrace Neighborhood"
Study area bounded by three
major arterials
SW 67th Ave. (Ludlam Road)
SW 72nd St. (Sunset Drive)
SW 80th St.
Residents concerned about
cut - through traffic and
excessive speeds
South Miami s X71'
Neighborhood Traffic Study . _ _
Study Progress
Two workshops with residents to identify issues
(December `07 &January `08)
Draft traffic improvement plan presented to
residents (April `08)
Miami -Dade Public Works Department reviewed
recommendations (May `08)
Revised traffic improvement plan presented to
residents (June `08)
Issues Identified
Cut - through traffic on
neighborhood streets due to
Ludlam Elementary School and
congestion on major roadways
Streets identified as potential
cut - through routes include
SW 68th Ct., SW 69th Ct., SW
74th St. , SW 7 5th Ter. , SW 68th
Ave., SW 69th Ave.
Parents park on the grass
shoulder along SW 67th Ave.
and SW 74th St. in the vicinity
of I i irl I n m P1mmnntn rxi <<'hool
Illegal parking on shoulder of SW 74th St.
Issues Identified
Average speeds within the
neighborhood are generally between
25 and 30 mph - supports lowering
speed limit to 25 mph
Long queue on the eastbound
approach of SW 80th St. at SW 67th
Ave. and on the northbound and
eastbound approaches of SW 67th
Ave. at SW 72nd St. during the A.M.
peak period
Major streets operate at acceptable
LOS during the A.M. and P.M. peak
periods, except for eastbound
direction of SW 801h St. during the
A _ nPak nPrind
Heavy congestion on eastbound
SW 80th St. during morning peak period
Elements of Improvement Plan
► Regulatory signs
Lower speed limits
Prohibit specific movements
► Traffic calming measures
Redesigning of streets to encourage slower traffic
speeds
► Intersection improvements
n
Signal timing modifications
�vtnnrl haft—ti irn ctnrn n Inngth
Regulatory Signs
Reduced speed
limit (25 mph)
All local streets
Turn restrictions
SW
67th
Ave.
& SW 74th
St.
SW
6 7th
Ave .
& SW 75th St.
SW
72nd
St. &
SW 691h Ct.
Traffic Calming Plan
Traffic Circle
SW 68t" Ave. and SW 751" Ter.
SW 68th Ave. and SW 781h Ter.
Curb Extension
SW 6 8th Ave . and SW 7 7th Te r.
SW 68th Ct. and SW 74th St.
SW 69th Ave. and SW 75th Ter.
SW 69th Ave. and SW 77th Ter.
Traffic Calming Plan
y Gateway Treatment
SW 67t" Ave. and SW 741" St.
SW
67th
Ave.
and
SW
75th
Ter.
SW
6 7th
Ave .
and
SW
761h
Te r.
SW
6 7th
Ave .
and
SW
7 7th
Te r.
SW
6 7th
Ave .
and
SW
7 8th
Te r.
SW
68th
Ave.
and
SW
72nd
St.
SW
68th
Ct. and
SW
72nd
St.
SW
68th
Ave.
and
SW
80th
St.
SW
69th
Ave.
and
SW
80th
St.
Signal Timing Improvements
SW 67thAve. and SW 72nd St.
Increase green time for the
north /south through movement
U.S. 1 and SW 80t" St.
Increase green time for the
eastbound approach
SW 67thAve. and SW 80t" St.
Increase green time for the
east /west movements
Turn Lane Improvements
Increase left -turn storage length on
eastbound approach at SW 67thAve. and SW
80t" St.
Could help minimize cut - through traffic on
neighborhood streets
Miami -Dade Public Works Department
recommendation
Cost Estimate
Improvement Type
Locations
Unit Cost
Base Cost
Contingency
(15 %)
Design,
Permitting,
and
Mobilization
30%
Order of
Magnitude
Cost
Speed limit signs
15
$500
$7,500
-
-
$7,500
Turn restriction signs
4
$500
$2,000
1$2,000
Curb extension
4
$5,000
$20,000
$3,000
$6,000
$29,000
Textured intersection
2
$10,000
$20,000
F$3,000
$6,000
$29,000
Traffic circle
2
1$25,000
$50,000
$7,500
$15,000
1$72,500
Gateway entry features
9
$15,000
$135,000
$20,250
$40,500
$195,750
Forced turn island
1
$5,000
$5,000
$750
$1,500
1$7,250
Total Cost
$239,500
$349500
$69,000
$343,000
K. _�_ _ T..__ I )vements at SW 80th Street and SW a t th Avenue
by the Miami -Dade County Public Works Dept.
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FIGURE 5. TRAFFIC CALMING IMPROVEMENT PLAN
SOUTH MIAMI NEIGHBORHOOD TRAFFIC STUDY
M nKimisy -rorr
and knocatos, 1
NOT TO SCALE
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TRAFFIC
CALMING OPTIONS
1. TRAFFIC DIVERTER
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2 TRAFFIC CIRCLE
db
1 CURB EXTENSION
4. TEXTURED PAVEMENT
GA- E #':AY TREATME`+
PROPOSED IMPROVEMENT LOCATION
PROPOSED SECOND PHASE MPROVEWENT
PROPOSED TURNING RESTRICTIONS
EXISTING TURNING RESTRICTIONS -
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