061112 Traffic Alert - Road Closures due to Ironman
The following is courtesy of the Ada County Highway Distric
Major impacts to drivers
expected during Boise's Ironman event
the course of eight hours, participants in Ironman Boise 70.3 will
race through town as they complete a 1.2-mile swim, 56-mile bike
ride and 13.1-mile run in succession. This year's Ironman Boise
will start on Saturday, June 12, 2010 at 2 p.m. beginning at Lucky
Peak Reservoir and end in downtown Boise on 8th Street in BoDo.
participants are expected for this event. This is the third year of
a five-year agreement between the Ironman organizers and the city
of Boise. Course maps and information about the event are available
on the Ironman Boise Web site: www.ironmanboise.com. The maps
are also attached to this email.
Ada County Highway District (ACHD) is working with Boise City,
Ironman organizers, Boise Police, the Ada County Sheriff's Office,
the Idaho Transportation Department (ITD) and others to prepare for
the road closures necessary to make the event possible. Citizens
not involved in the Ironman event are urged to prepare and take
alternate routes. Detour routes will be in place for the closures
and drivers should use caution. Boise Police officers will be
stationed along the course and will help residents get in and out
of businesses and residences during the event. There will be around
75 flaggers directing traffic and 45 volunteers will also help
along the route at intersections and driveways.
is planning a different approach to restrictions on Idaho 21, which
is used for the cycling portion of the event. Idaho 21 has been
completely closed in the cycling area in years past, but this year
one lane will be maintained for traffic to get through in both
directions. There are no "hard" or complete closures planned
without detour routes in place.
Idaho 21 on Saturday, June 12
. 2:15 p.m. -
Flaggers will start directing traffic between Diversion Dam and
Surprise Way, and lane restrictions will be put in place.
Diversion Dam and Lucky Peak Dam, the right northbound lane and
shoulder will be closed off to traffic. One northbound lane
will remain open to traffic, as well as both
Surprise Way and Technology Lane one lane in each direction will be
· 7:30 p.m. -
Based on past years, the last bicyclist is anticipated to move
through by this time. Traffic flagging will end as soon as the last
rider leaves Idaho 21.
· 7:45 p.m. -
The highway returns to normal operations.
Other ITD roads impacted Saturday, June 12
· Noon - Front
Street will close between 6th and 9th streets. Traffic will
be detoured north on Capitol, west on Idaho, south on 9th back to
Front. This area will be the first-aid medical station and the
command center for law enforcement during the event.
· Between 2:40
p.m. and 7 p.m. the I-84 Eisenman interchange ramps will be closed
and traffic will be detoured to the Gowen interchange. The
closure of the Eisenman interchange allows the bicycling portion of
the competition to be rerouted away from the Gowen interchange and
the Idaho 21/Federal Way intersection, which are more heavily used
by motorists. The interchange is expected to reopen as soon
as the last cyclist gets through the area.
· 4 p.m. -
Myrtle Street will close between Capitol Boulevard and 9th Street.
Traffic will be detoured north on 11th, east on Main Street,
south on 3rd back to Myrtle.
· 11 p.m. -
Myrtle Street will return to normal operations.
· After midnight
- Front Street will return to normal operations.
ACHD roads impacted include:
· 8th Street
between Broad Street and Front Street closed Thursday, June 10
(today) at 8 a.m. and will be back open Sunday at 8 a.m.
Boulevard between Myrtle Street and Front Street will be closed
Friday, June 11 from 6 p.m. to Sunday, June 13 at 12:30 a.m.
· Broad Street
between Capitol Boulevard and 9th Street will be closed between
4:30 p.m. and 12:30 a.m. Saturday.
Valley Road from Gowen Road to Ten Mile Creek Road will be closed
from 3 p.m. to 6:45 p.m. Saturday.
· Ten Mile Creek
Road will be closed from Pleasant Valley Road to South Cole Road
from 3:20 p.m. to 6:30 p.m. Saturday.
· Eisenman Road
from Interstate 84 to the Boise Factory Outlets mall will be closed
from 2:50 p.m. to 6:45 p.m. Saturday.
· Federal Way
and Capitol Boulevard will be closed between Protest Road and
Myrtle Street from 4:30 p.m. to 8:20 p.m. Saturday.
· Warm Springs
Avenue between Highway 21 to the ParkCenter Bridge will have a lane
restriction and delays between 4 p.m. and 7:40 p.m. Saturday.
Only northbound traffic will be allowed between Highway 21
and the Idaho Shakespeare Festival. The Shakespeare Festival
will be accessible from town, but expect detours and delays.
· Gowen Road
between Eisenman Road and Pleasant Valley will be westbound traffic
only between 2:50 p.m. and 6:45 p.m. Saturday.
between Boise Avenue and Federal Way will only be open to eastbound
traffic from 4:15 p.m. to 8 p.m. Saturday.
will have special traffic signal timing plans for the closures on
Capitol, Front and Myrtle to help move traffic. An ACHD
traffic operations engineer will be at the ACHD Traffic Management
Center Saturday monitoring traffic conditions and adjusting signals
boards on local highways and the Connector are in place to alert
motorists to the closures. Ironman organizers distributed
5600 mailers describing traffic impacts to residents.
a public service, ACHD provides information about lane restrictions
and closures for both ACHD and non-ACHD projects and events.
A map of all road work taking place in Ada County, as well as
more information on this project can be found at