5b- Green Gables NTS '16-SW 329th Way (Hoyt Rd SW to 51st Place SW)CIT
Federal Wa
Green gables
Neiahborhood Traffic Safe
2016
SW 329th Way
(51 st P I SW to Hoyt Rd SW)
Presented by
Erik Preston, P.E.
Senior Traffic Engineer
9/4/2018
CIT
Federal Wa
Policy Question:
Should the City Council approve the construction of
one (1) mini -roundabout and one (1) speed table on SW
329th Way between Slst PI SW and Hoyt Rd SW?
9/4/2018 2
CIT
Federal Wa
Study Area Map
9/4/2018
CIT
Federal Wa
Background
• NTS Petition submitted on 12/15/2016.
• Concerns of:
• Excessive Speeding
• Cut -Through Traffic
• Pedestrian Safety
• Minor Collector Street evaluated & met minimum
3.0 severity criteria with 3.5 points.
9/4/2018
C!
Public Works:
Streets o Traffic -a Development,;
Solid Waste 9 Surface Water Ma
Data Collection Map
t�
I Tube 2-7fS2• 1
Counts �.'-kwoa: 4A
8. -3 82
778 ADT
30.6 mph 328
328
% -32
'00
5j,
32 32 82
2 ?'1 4-
ON" k2,1-12
32
V.2
A303
24 3291 32
-92.7
32.915 U)
9/4/2018
CIT
Federal Wa
NTS Criteria
A-liiior. Collector. sawt NTS CiVei•iiq
Point
scale
86th Percentile
Speed
Average Daily
Traffic JADT)
Location
SchooliPark
5-bear Collision History
Total
Iniury
F I
0.0
0 - 25
-
, 0
0_5
26 - 27
1,001 - 1,800
-
1.0
28 - 29
1, - 0
-
1
-
1.5
80 - 1
2,601 - 3.400
-
-
-
-
2.0
32-33
3,401 - 4.200
-
=
2
1
2.5
84 - 35
4,201 - 5,000
-
-
-
.0
0+
5,001+
-
-
Street
9/4/2018
CIT
Federal Wa
NTS Community Meeting
• April 12, 2017 at Green Gables Elementary
• 14 attendees signed in
• Attending Group had 4 Prioritized Solutions:
1. Mini -Roundabout at 49th Ave SW.
2. Mini -Roundabout at 47th Ave SW (AWSQ
3. Speed Humps at the bottom of the hill, east of
46th CtSWornear48th Ct SW.
4. Speed Hump west of 49th Ave SW or Chicanes
near 46th Ct SW.
9/4/2018 7
CITY OF
Public
Federal AW
a Streets • Tr;
►� Solid Wast
Prioritized Option
:77 a
=A
�+- #1 Mini-RBT
s� �22 @ 49 Ave SW
321 3;
"any .Sr
2�3 32
a14
32.9N.. 1
■
Speed13
.�
`" 3280 '
�3272. 3281 -s 8 S 7 2 1
328 S
495 91£ . Hume 32
3.k. _32830 3281
4-84
32321
329 ,
291 91;1
# ,.
29
291• t,
15 . w 4315
1 32,130 S
#3 Speed
Hump
9/4/2018
''md:.t V-..fb. x{
42
#2 Mini-RBT
@ 47th Ave SW
A
#4
Chicanes
#3 Speed
Hump
8
CITY OF
Federal Wa
Ballot Proposal
• Option I — I Mini -Roundabout & I Speed Table
.4p J.4,32
Mini-RBT 1 2'
@ , . 6
ti
4
'7LQ2 491h Ave SW d �27
� 4*5 4611
0 Option 2
No Action
:�2�j
�2
:Q
46 .9
4�P
2
I]-Wnv Stan
Speed Table
e/o 461h Ct SW
-V'
7
9/4/2018 9
CIT
Federal Wa
NTS Balloting
• 51 % approval (of returned ballots) required for
proposal to be presented to Council.
• 194 ballots mailed with 67 returned on -time
• 34.5%return rate
Option Description Total
1 1 Mini -Roundabout and 1 Speed Table 45
2 No Action 22
• Staff proposal aligns with advisory ballot results
favoring Option 1.
9/4/2018
10
CIT
Federal Wa
Budget Considerations
• Project estimate of $16,000 exceeds the $15,000
per -neighborhood budget.
• $50,000 annual NTS budget with $20,000
designated for school safety.
• Currently only one other project under scheduled
for construction this year, at a cost of $12,000,
leaving $38,000 available in this year's budget.
9/4/2018 11
CIT
Federal Wa
Options Considered
1. Authorize the installation of one (1) mini -
roundabout at the intersection of 491h Ave SW & SW
329th Way and one (1) speed table on SW 329th Way
east of 46th Ct SW.
2. Do not authorize the installation of the proposed
traffic calming devices and provide direction to
staff.
9/4/2018 12
CIT
Federal Wa
Mayor's Recommendation
The Mayor recommends forwarding Option 1 to the
July 18, 2017 City Council Consent Agenda for
approval.
9/4/2018
13