HomeMy WebLinkAboutTrans 2012-05-21 Item 2B - Color Walk and Roll Segment Design ReportB3 - Boeing Access Road / S Ryan Way from East Marginal Way S to 51st Avenue S
EXISTING CONDITIONS
• Boeing Access Rd (BAR) - Principal Arterial
• S. Ryan Way - Minor Arterial
• BAR - 6 Lanes; Ryan Way - 4 lanes, All lanes 11'
• Posted speed of 40 mph
• ADT (2008 Average) of 36,301 east of E Marginal
• ADT (1991) on Ryan Way - 7,653
• Heavy truck volumes on Boeing Access Rd.
• Shoulder and sidewalk on south side
• Number of bicycle /pedestrian accidents: 5
-- >Locations: 3 b/w East Marginal and onramp to 1 -5;
1at Ryan Way & 47th Ave; 1 on Ryan Way 300'
north of S 107th St.
CONTEXT
• The surrounding uses are primarily industrial
• Connects Ryan Hill neighborhood to rest of City.
• Future trail connections west of 1 -5
• Transit corridor with no stops
Looking east toward Martin Luther King Way S.
CONSTRAINTS
• ROW averages 100'; Possible building encroachment
at east end of road
• Ramp merge areas have safety impacts
• Boeing Access Rd. bridge over 1 -5 has
constrained ROW (80')
• Uphill portion of S. Ryan Way east of MLK
• No shoulders on bridge over railroad
• WSDOT owns the intersection of Ryan
Way /BAR /MLK, as well as all on- and off -ramps
• Any proposed changes to WSDOT ROW and limited
access areas must go through an extensive review
and approval process.
OPPORTUNITIES
• Possible use of existing asphalt path on the north
side, from the off ramp from Airport Way
• City has CIP project to replace the bridge
over the BNRR that will be 110' wide w/ sidewalks
both sides (2010 thru 2013).
• This CIP project only involves one 340' section, out of
a total length of over 2,500', of Boeing Access Rd.
Looking east under light rail structure
IMPROVEMENT OPTIONS
• Option 1 - On Boeing Access Rd, widen road and
bridge to allow for 5' bike lanes both sides and 6'
sidewalk both sides. Would require coordination w/
ramp improvements. Provide painted bike lanes at all
ramp merge areas. Would require relocation of signal
poles, utilities, lighting, primarily near MLK
intersection. On Ryan Way, restripe from 4 lanes to 3
lanes and provide 5' bike lane both sides. (Preferred)
• Option 2 - Restripe Boeing Access Road to remove
one EB lane, and provide 5' bike lanes both sides;
Provide painted bike lane at ramp; Restripe Ryan
Way from 4 lanes to 3 lanes and provide 5' bike lane
on both sides or mark sharrows if road diet is not
feasible.
• Option 3 - Same as Option 1 for Boeing Access
Road. On Ryan Way, provide a climbing lane in the
uphill direction and sharrows in the downhill direction.
Source: 2009 Microsoft Live Search Maps
< 6. -6..
■
5'
11'
12'
11'
6' -6"
57' Total Width
Typical Cross Section for Ryan Way, for Option 1 (Preferred Option)
Tukwila Bicycle Friendly Routes and Sidewalk Segments Design Report — Chapter 1
Page 1 -11
B4 - On and Off Ramps to /from Airport Way and Boeing Access Rd
On- and off- ramps to /from Airport Way and Boeing Access Rd
Project Description
The existing trail along the west side of Airport Way will be widened to 12 feet, and will be extended
north from its current terminus, to S. Norfolk Street. This will require use or relocation of the existing
rail line. A 12' wide trail will be built along the south side of the far western side of Boeing Access
Road, before transitioning to a 5' wide bike lane along the south /east side of the NB ramp to Airport
Way S. The bike lane will continue north along Airport Way S, to S. Norfolk Street. A painted bike lane
is recommended where the WB to NB onramp from Boeing Access Road merges into Airport Way, to
provide better visibility of bicyclists crossing the ramp. A crosswalk will be installed across Airport Way
S, at S. Norfolk Street, which ties to Project B10. Wayfinding signage is recommended near the
approach to E. Marginal Way S to direct bicyclists to the various other bike facilities and activity
centers, such as the Museum of Flight. It is anticipated that the improvements can be made with little
right -of -way impacts. No major impacts to utilities are anticipated.
4
Planning Level Opinion of Cost
RIGHT -OF -WAY
CONSTRUCTION
ENGINEERING
PERMITS
$0
$434,700
$66,000
$30,000
TOTAL COST
12' shared
use path
Grass — Width
varies
10' shoulder
11'
11' 3'
Gore
11'
>
11'
Approx 85' Total
$530,700
Tukwila Bicycle Friendly Routes and Sidewalk Segments — Chapter 2
Page 2 -11
B4 - On and Off Ramps to /from Airport Way and Boeing Access Rd
On- and off- ramps to /from
Airport Way and Boeing Access Rd
Expand Existing Trail to 12 Feet Wide
New Crosswalk
i
Connect to Existing Sidewalk
Wayfinding Signage
(Typ. )
New 12 -Foot Trail
See Inset to Right
Painted Bike Lane
Potential Future Trail
Wayfinding Signage
to 5 Norfolk St
New Crosswalk to Connect
Norfolk Street to Trail
Wayfinding Signage
(TYp -)
S Norfolk St_
-See Sheet 2
For Details
See B -1O for Details
Future Trail
Connection
Widen Shoulder as Necessary
to Allow Bike Traffic
Potential Future Trail
Existing Rail line to be relocated
New 5" Bike Lanes in Existing Shoulder
Pave with Asphalt as necessary
BIKE LANE
SCALE
75
0 75
FEET
150
Tukwila Bicycle Friendly Routes and Sidewalk Segments — Chapter 2
Page 2 -12
B9 - East Marginal Way: Boeing Access Road to SR 599
East Marginal Way: Boeing Access Road to SR 599
Project Description
This project improves bicycle facilities along E. Marginal Way S. between Boeing Access
Road and the intersection at Interurban Ave S. It includes restriping existing shoulders along
E. Marginal Way from Interurban Avenue S to S 112th Street, for 5' wide bike lanes in both
the north and south directions. In the vicinity of the intersection with S. 116th Street,
wayfinding signage is recommended to guide bicyclists/ pedestrians to the Duwamish River
Trail. North of S. 112th Street, sharrows will be installed in both directions, due to the lack of
roadway width, and to minimize impacts to adjacent businesses and their associated parking
areas. All improvements can be accommodated within the existing right -of -way with no
impacts to existing utilities.
><
5' -6"
12'
kShoulder
> 8'
(varies)
Approx. 40' -6" Total
S 112nd Street to Boeing Access Road (See Sheet 1)
6' -6 "
Planning Level Opinion of Cost
RIGHT -OF -WAY
CONSTRUCTION
ENGINEERING
PERMITS
$0
$29,700
$5,000
$0
TOTAL COST
12'
12'
+5
$34,700
6' -6"
59' Total Width
Interurban Avenue S to S 112th Street (See Sheet 1)
Tukwila Bicycle Friendly Routes and Sidewalk Segments — Chapter 2
W
Page 2 -21
B9 - East Marginal Way: Boeing Access Road to SR 599
See B-4 for Details
East Marginal Way: Boeing Access Road to SR 599
Sharrow Symbol
(Typ.)
.7.14
Future Trail
Future Crossing
See Sheet 2
For Details
Matchline See Abov
Approximate Location of Existing
Light Rail Support Column
See B -11 for Details
See B -5 for Details
Match line See Below Left
BIKE LANE
Restripe for 5 -Foot Bike
Lanes in Existing Shoulder
Restripe for 5 -Foot Bike
Lanes in Existing Shoulder
Wayfinding Signage
to Green River Trail
BEGIN
RIGHT TURN LANE
YIELD TO BIKES
SCALE
75
0 75
FEET
150
Tukwila Bicycle Friendly Routes and Sidewalk Segments — Chapter 2
Page 2 -22