I-39 Illinois Road Conditions

I-39 crosses 140 miles of Illinois, from the Wisconsin line to its end in the state. That is 46% of I-39's 306 miles.

Inside Illinois it meets I-90 at Rockford, and I-80.

By mile marker, I-39 passes Rockford 119 (5 mi off). It is the only city on this stretch that the mileposts name.

1 current report along the route. Always check with the responsible state DOT before setting off.

• Lanes blocked

  Lasalle-All Ramps At Int80/Int39

  LASALLE • IL • Until Nov 30, 12:00 PM

Winter reporting is off for the season. Iowa DOT's Winter Road Conditions – Midwest Region feed, which carries Illinois DOT's segment-by-segment snow and ice conditions, runs from October 15 to April 15; outside that window it changes only as needed. Our own forecast below runs year-round.

Conditions are entered by Illinois DOT maintenance staff and describe what is on the pavement, not the forecast. They reach this page through Iowa DOT's Winter Road Conditions – Midwest Region feed, published for reference; the authoritative report is Getting Around Illinois. Always check with Getting Around Illinois before setting off.

Source: Illinois DOT, via Iowa DOT's Midwest Region layer, CC BY 4.0.

NOAA 1991–2020 Climate Normals, from a weather station in Illinois. A dash is a figure that station does not report, not a zero.

Towns Along I-39 in Illinois

From Bloomington to South Beloit, with the position of each town measured along this stretch itself — counted from the Bloomington end, not from a state milepost, so it will not match the numbers on the signs.

1. 0 mi Bloomington 4.7 mi off the road
2. 5 mi Hudson
3. 26 mi Minonk 1.0 mi off the road
4. 55 mi Oglesby
5. 57 mi Peru 3.6 mi off the road
6. 73 mi Mendota 2.1 mi off the road
7. 101 mi Hillcrest 2.0 mi off the road
8. 119 mi Rockford 4.0 mi off the road
9. 131 mi Loves Park 1.7 mi off the road
10. 136 mi Roscoe 1.2 mi off the road
11. 140 mi South Beloit 1.7 mi off the road

Places from the US Census Gazetteer and population estimates, both public domain; distances measured along this page's own route geometry.

Related Roads

I-39 in Illinois Road Weather FAQ

Is Interstate 39 in Illinois closed right now?

No full closures are reported on I-39 in Illinois as of Oct 8, 2026 10:47 PM CDT. One lane closure, roadworks or restriction is in force. They are listed under closures and road blocks on this page.

What are I-39 in Illinois road conditions today?

The map on this page colors the route along I-39 in Illinois by what is on the pavement right now — dry, wet, slush, snow or ice — from radar and surface data, last updated Oct 8, 2026 9:48 PM CDT. Right now temperatures run from 55°F to 63°F and the strongest wind is 4 mph.

Where are Illinois road closures reported officially?

Illinois's official traveler information service is Getting Around Illinois, at gettingaroundillinois.com, and it is where closures and restrictions are reported.

How often does Illinois DOT update winter road conditions?

Illinois DOT reports the winter condition of each stretch of state highway through Iowa DOT's Winter Road Conditions – Midwest Region feed, which runs from October 15 to April 15 and refreshes every 10 minutes. The conditions are entered by maintenance staff and describe what is on the pavement, not a forecast; this page shows the current report for I-39 in Illinois beside our own road-surface forecast.

Are there live traffic cameras on I-39 in Illinois?

Yes. This page shows 6 live views on I-39 in Illinois from the state transportation departments' own camera feeds, further down the page, refreshed each time you load it.

How often are I-39 in Illinois road conditions updated?

The road surface and weather layers are rebuilt whenever this page is opened with data more than ten minutes old, and refreshed on a schedule in between, so nothing here is more than about two hours old even on a road nobody has looked at. Closures and road blocks are re-imported from the state 511 feeds every fifteen minutes, and the written state-by-state summaries are refreshed daily. Every section on this page carries the time its data was fetched.