Welcome to the Algonquin Bypass
The Illinois Department of
Transportation in cooperation with McHenry County
initiated a Congestion Mitigation Feasibility Study to
identify solutions to the congestion experienced at the
Illinois Route 62 and Illinois Route 31 intersection in
the downtown district of the Village of Algonquin. The
proposed study and subsequent proposed improvement is
located in southeastern McHenry County and encompassed
review of traffic which passes through the communities
of Algonquin, Lake in the Hills, Cary and Crystal Lake.
The final outcome of the Feasibility Study was the
implementation of a Western Bypass of the intersection.
alternative provides the most capacity to handle traffic
and had the least impacts on the communities involved.
The proposed improvement will provide a transportation
system improvement that will address capacity,
operational and safety deficiencies, and satisfy 2030
travel demands along the Illinois Route 31 corridor
between Edgewood Drive and Rakow Road. The final project
will include the reconstruction and widening of portions
of Illinois Route 31 along with the construction of a
relocated Illinois Route 31 on a new alignment.
||September 4, 2012
Western Bypass, Contract 60F72
Winter 2014 Construction Update:
Algonquin Rd from Meyer Dr to IL Rte
31 (Main St):
- Traffic is currently open to two
lanes in each direction on Algonquin Rd.
- Periodic closures of one lane will
be required to finish Entrance/Exit Ramp
pavements and Curb, Bridge concrete
pours, Lighting and Traffic Signal
IL Rte 31 from Edgewood Dr to
Huntington Dr/South Main St
- Retaining wall work near Edgewood Dr
is structurally complete with staining
remaining to be done in the Spring.
- Huntington Dr will remain closed for
the block retaining wall construction
and installation of the new Street
- Traffic Signal and Lighting work
- Traffic is currently using the new
Southbound lanes until the remaining new
Northbound lanes can be paved in the
- Side Street aprons and Driveways
will be finished in the Spring as well.
- One lane in each direction will
remain open during the winter.
New Bypass Route of IL Rte 31 from
Huntington Dr/S. Main St to Quarry Access/N.
- Construction of the Bridges over
Crystal Creek and over Algonquin Rd will
as well as various retaining wall
construction through Winter and Spring.
- The Noise Abatement Wall
construction will proceed on the East
side of IL Rte 31 from Railroad St to
- Street Lighting work will proceed
through Winter into Spring.
IL Rte 31 from Cary/Algonquin Rd to
- One lane in each direction is
currently traveling on the new
Southbound lanes of IL Rte 31.
- The new Northbound lanes will be
completed in the Spring as well as all
adjacent Driveways, curbs and side
- Traffic Signal and Lighting work
will proceed through Winter into Spring.
This site has been created to provide one location where
the public can get details about the Western Algonquin
Bypass project scope and the construction staging and
schedule. The information is intended to help you
understand what we will be doing and when the work is
anticipated to take place.
As the Department works to make this
section of roadway safer for the future, we want to make
sure users, residents and local business owners have up
to date information on the progress of the project. If
you have any questions about the project that have not
been answered with the information on this site please
use the “Contact Us” section and a response will be sent
WORK ZONE SAFETY
Did you know work zone fatalities are
down 29.6 percent compared to 2003? Aggressive law
enforcement and awareness campaigns and significant
improvements to work zone safety traffic control reduced
Illinois work zone fatalities from 44 in 2003, including
5 workers, to provisionally 30 with 3 workers killed in
So, Give ‘em a brake…slow down
for their sake and yours!
IDOT appreciates your patience and understanding as we
work to improve the roadways in your community.
IDOT CONSTRUCTION ZONES
IDOT's new website provides up to date information
on all current active construction contracts, including
those funded through the American Recovery and
Reinvestment Act of 2009, after contract execution.
IDOT DBE PROGRAM
If you are a small business and are
interested in work on road construction projects with
click here for information on IDOT’s Disadvantaged
Business Enterprise program.
If you have a specific project-related
question, please submit your question by visiting IDOT’s
http://www.dot.il.gov/contact.html and complete the
email form to receive a prompt response.