Washington...
WA 10 (future):
A short part of WA 10, between WA 970 and I-90, is proposed to be an expressway. Along with WA 970, it will connect the proposed US 97 expressway with the I-90 freeway.
US 12:
US 12 is proposed to be a freeway / expressway across the entire state.
Summary:
| Segment |
Type of Highway |
| Aberdeen to Montesano |
Expressway proposed |
| Montesano to WA 8 at Elma |
4-lane divided expressway |
| WA 8 at Elma to 2 miles west of I-5 |
Expressway proposed |
| 2 miles west of I-5 to I-5 |
Super-2 expressway |
| Along the multiplex with I-5 |
US 12 is a freeway |
| I-5 to 3 miles west of Mossyrock |
Expressway proposed |
| 3 miles west of Mossyrock to Glenoma |
Super-2 expressway |
| Glenoma to 5 miles west of WA 123 |
Expressway proposed |
| 5 miles west of WA 123 to WA 123 |
Super-2 expressway |
| WA 123 to Naches |
Expressway proposed |
| Naches to South 40th St in Yakima |
4-lane divided expressway |
| 40th St in Yakima to the east end of I-182 in Pasco |
This segment is a freeway. It includes a long multiplex with I-82 and a shorter multiplex with I-182. |
| Pasco to WA 124 |
4-lane divided expressway |
| WA 124 Interchange |
There is a project planned that will provide a new
interchange for US 12 at WA 124, and an overpass at Humorist Rd. Project
will be designed starting in the spring of 2006. Construction is
expected to begin in 2009. |
| WA 124 to McNary Pool |
This is currently a super-2 expressway. Construction is
underway to widen the expressway to four lanes. Design work began in
July 2003. The project is scheduled to be open to traffic in the winter of 2005. |
| McNary Pool to Attalia |
This is currently a super-2 expressway. Construction is
underway to widen the expressway to four lanes. Construction began on
this four mile section in May 2003. This section was complete and open to traffic ahead of schedule in August, 2004. |
| Attalia Vicinity |
Design on this phase is scheduled to begin in the winter
of 2003. The improved highway is scheduled to be open to
traffic in the winter of 2007. |
| Attalia Vicinity to US 730 |
Design work on this phase is scheduled to start in the
spring of 2006. We anticipate the new roadway will be completed and open to traffic in the winter of 2008. |
| Wallula to McDonald Rd |
A study to evaluate alternatives and determine the
final location for continuing the four-lane alignment of US 12 from Wallula to
McDonald will be completed by 2007. |
| McDonald Rd to Walla Walla |
The entire length of this piece is proposed to follow a
new alignment slightly to the north of the existing US 12, with three
new at grade intersections at Ireland Rd, Last Chance Rd, and Sudbury
Rd. Pine St, at the east end of the project limits (western end of
existing Walla Walla expressway - provides current connection to WA 125)
is proposed to be a diamond interchange with roundabouts constructed at
the ramp terminals on Pine St. Construction is scheduled to begin in
early 2008 and be complete in 2009. |
| Through Walla Walla |
5-mile long 4-lane divided expressway |
| Walla Walla to Garfield / Asotin County Line |
Expressway proposed |
| Garfield / Asotin County Line to WA 128 in Clarkston |
Super-2 expressway |
| WA 128 to the Idaho border |
Expressway proposed |
WA 14:
Summary:
| Segment |
Type of Highway |
| I-5 to Exit 12 (Camas City Center / BR 14) |
This segment used to be an expressway, but the upgrade
to freeway was completed in 2003. |
| Camas to East Camas (just west of Washougal) |
Super-2 expressway, planned to be upgraded to a 4-lane
freeway. The proposal widens WA 14 to 4 lanes divided between the NW 6th
Ave and WA 500 and constructs a new interchange in the vicinity of WA
500 (Union St). The new interchange combined with a south side Frontage
Road will also eliminate the 2nd St and 6th St intersections. The
interchange configuration of WA 14 and WA 500 is undetermined at this
time, but WA 14 will obviously be the through route. Construction is
scheduled to begin in the summer of 2009 and be complete in 2011. |
| East Camas to North Bonneville |
Expressway proposed |
| North Bonneville to Cascade |
Super-2 expressway |
| Cascade to Carson |
Expressway proposed |
| Carson to Home Valley |
Super-2 expressway |
| Home Valley to 6 miles west of WA 142 |
Expressway proposed |
| 6 miles west of WA 142 to WA 142 |
Super-2 expressway |
| WA 142 to US 97 |
Expressway proposed |
| US 97 to I-82 |
This 80-mile segment is a Super-2 expressway |
WA 16:
WA 16 is an expressway between Gig Harbor and Burley-Olalla Rd. This fits in with the WA 16 / WA 3 freeway that some
road geeks have proposed as a fictional I-3.
Junction Log:
| Junction |
Type of Access |
| Wallochet Dr / Fox Island |
Folded diamond interchange |
| Rosedale St NW |
Overpass - NO ACCESS |
| Access road to a cemetery |
At-grade on northbound only |
| Burnham Dr |
Diamond interchange |
| WA 302 Purdy / Shelton |
y-interchange west |
| WA 302 Purdy / Shelton |
y-interchange east |
| Burley / Olalla Rd |
At-grade (Speed limit lowers to 50 mph 1/2 mile before
the intersection). WSDOT completed the 'Burley-Olalla Interim Safety
Project' in 2004, which modified the existing WA 16 intersection at
Burley-Olalla Rd. West(north)bound traffic is no longer allowed to make
left turns across east(south)bound traffic. Eastbound WA 16 still has
access across Westbound WA 16 to Burley-Olalla to the east of WA 16.
There is a new interchange scheduled to be constructed starting in
November of 2007. The new interchange will be a diamond interchange with
Burley Olalla rd passing over WA 16. This intersection is the last
remaining at grade crossing that actually crosses WA 16. The remaining
at grade intersections are for local business access between Rosedale St
and Burnham Dr, and may also be rerouted or eliminated in the future. |
WA 17:
Summary:
| Segment |
Type of Highway |
| US 395 to I-90 |
Super-2 expressway |
| I-90 to Stratford Rd in Moses Lake |
Super-2 expressway planned to be upgraded to 4 lanes in
the short-term |
| Stratford Rd to Moses Lake Airport |
4-lane expressway |
| Moses Lake Airport to WA 28 at Soap Lake |
Super-2 expressway |
| Soap Lake to Blue Lake |
Expressway proposed |
| Blue Lake to 2 miles south of US 2 |
Super-2 expressway |
| 2 miles south of US 2 to US 2 |
Expressway proposed |
| US 2 to US 97 |
No expressway planned |
Junction Log:
| Junction |
Type of Access |
| WA 26 |
Diamond with WA 17 as the through route |
| Stratford Rd north of Moses Lake |
interchange |
WA 18:
WA 18 is planned to be a full freeway for the entire distance between I-5 and I-90. However, there is currently a super-2 expressway from Maple Valley to I-90. Work started in 2003 to upgrade the segment from Maple Valley to Issaquah Hobart Rd to a freeway. The speed limit is 55.
Junction Log:
| Junction |
Current Type of Access |
Future type of access (when WA 18 is upgraded to freeway) |
|
SE 231 St - Maple Valley / To WA 169 - Renton / Enumclaw |
Diamond Interchange. Divided highway ends. |
Diamond interchange. |
|
236 Ave SE |
236th Ave SE is
permanently closed, and
is a dead end on either
side of WA 18. |
Dead end - No access |
|
244 Ave SE |
At 244th Ave SE, the
westbound overpass over
244th is complete - all
traffic uses this
alignment. All movements
between the two roads is
via the westbound on and
off ramps. A temporary
traffic signal is in
place to facilitate
movements to and from
eastbound traffic
utilizing temporary
ramps that will be
removed upon completion
of the east half of the
interchange - work is
currently in progress.
This project is expected
to be complete by the
summer of 2006. |
Trumpet interchange |
|
SE 200 St |
Overpass - No access |
Overpass - No access |
|
Divided highway begins and WA 18 widens to 4 lanes. |
|
Issaquah-Hobart Rd |
Extended trumpet interchange |
Extended trumpet interchange |
|
Divided highway ends; eastbound truck lane continues to Tiger Summit.
In the future, the
alignment will be 4
lanes divided by a 51
foot median, with truck
climbing lanes going up
on Tiger Mountain. |
|
Tiger Summit |
At-grade |
Diamond interchange |
|
Truck lanes end in both directions. |
|
SE 104 St |
At-grade |
The I-90 junction
preferred alternative
includes direct freeway
to freeway access,
functioning as a 3Y, but
the roadway will also
continue as it does now
to the existing diamond
interchange, where the
ramp terminals will have
roundabouts installed
for movements to and
from Snoqualmie Parkway
and SE 104th ST. Two
flyovers will be built,
and I believe that the
connections to/from west
I-90 will be 1 lane, and
to/from the east will be
2 lanes. There are also
plans to revise or
relocate the existing
weigh station, which is
located along the I-90
westbound on ramp. New
location may move it 2
miles east, just before
the exit 27 on ramp.
Work is scheduled to
first for the I-90/WA 18
interchange in 2012,
then widening in 2015.
|
|
I-90 East ramps |
Traffic signal |
|
I-90 West ramps |
Traffic signal |
WA 20:
Summary:
| Segment |
Type of Highway |
| Coupeville |
There is a short super-2 in Coupeville. Other than that, none of WA 20 west of Spur 20 is planned to be upgraded to an expressway. |
| Spur 20 to WA 536 |
4-lane divided
expressway |
| WA 536 to I-5 |
Expressway planned in
the short term. The environmental process will be completed in fall
2004. ROW purchase will be complete by fall 2006. Construction will
begin in early 2007 and be completed in early 2009. |
| I-5 to 5 miles east of Marblemount |
Expressway proposed |
| 5 miles east of Marblemount to Newhalem |
super-2 expressway |
| Newhalem to Diablo |
Expressway proposed |
| Diablo to Winthrop |
super-2 expressway |
| Winthrop to US 97 at Okanogan |
Expressway proposed |
| Along the US 97 multiplex |
WA 20 is a super-2 expressway |
| US 97 to US 395 |
No expressway planned |
| Along the US 395 multiplex |
WA 20 is proposed to be built as an expressway with a
freeway bypass of Colville |
| US 395 to US 2 |
No expressway planned |
Spur 20:
Spur 20 is a 4-lane divided expressway from the junction with WA 20 to the Anacortes City Limits. This is a westward extension of the WA 20 expressway.
WA 21:
The only expressway segment of WA 21 is in the immediate vicinity of the US 395 freeway. The short super-2 expressway lasts for one mile north of US 395 and three miles south of US 395.
History:
This short segment of WA 21 was built as an expressway during the construction of the US 395 freeway with the purpose of being used as a connector. Prior to this, WA 21 was multiplexed US 395 for a short distance.
WA 22:
Summary:
| Segment |
Type of Highway |
| I-82 at Exit 50 to US 97 at Toppenish |
Expressway proposed |
| US 97 at Toppenish to I-82 at Prosser (Exit 82) |
Super-2 expressway |
Sources:
Chris Kalina, Mark Bozanich, Stephen Dailey
Last Updated: 1/28/06
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