Editing McHenry County, Illinois (section)

===Major highways===
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* [[File:I-90.svg|20px]] [[Interstate 90]]
* [[File:US 12.svg|20px]] [[U.S. Highway 12]]
* [[File:US 14.svg|20px]] [[U.S. Highway 14]]
* [[File:US 20.svg|20px]] [[U.S. Highway 20]]
* [[File:Illinois 22.svg|20px]] [[Illinois Route 22]]
* [[File:Illinois 23.svg|20px]] [[Illinois Route 23]]
* [[File:Illinois 31.svg|20px]] [[Illinois Route 31]]
* [[File:Illinois 47.svg|20px]] [[Illinois Route 47]]
* [[File:Illinois 62.svg|20px]] [[Illinois Route 62]]
* [[File:Illinois 120.svg|25px]] [[Illinois Route 120]]
* [[File:Illinois 173.svg|25px]] [[Illinois Route 173]]
* [[File:Illinois 176.svg|25px]] [[Illinois Route 176]]
* [[Lake Cook Road]]
* [[Randall Road]]
{{div col end}}

Several Federal and state highways run through McHenry County, including [[U.S. Highway 20]], [[U.S. Highway 14]], [[U.S. Highway 12]], [[Illinois Route 22]], [[Illinois Route 23]], [[Illinois Route 173]], [[Illinois Route 120]], [[Illinois Route 176]], [[Illinois Route 47]], [[Illinois Route 31]], and [[Illinois Route 62]]. Highly traveled county highways include [[Randall Road]], Algonquin Road, Rakow Road, and Walkup Road.

McHenry County was the most populous county in the United States without direct access to an [[Interstate Highway]] within its borders. As a result, residents usually used the nearby [[Interstate 90]] (the [[Jane Addams Memorial Tollway]]), via [[Interchange (road)|interchanges]] in neighboring [[Kane County, Illinois|Kane County]]. But a new interchange is now completed at I-90 and Illinois Route 23, which provides McHenry County with direct access to the interstate highway system.

[[Interstate 94]] lies to the east of McHenry County in Lake County, Illinois.