I-35 Iowa Road Conditions

I-35 crosses 219 miles of Iowa, between the Minnesota line and the Missouri line. That is 14% of I-35's 1,569 miles.

Inside Iowa it meets I-80 at Des Moines.

By mile marker, I-35 passes Des Moines 85. It is the only city on this stretch that the mileposts name.

23 current reports along the route, including 1 full closure. The 8 most serious are listed below. Always check with the responsible state DOT before setting off.

• Road closed

  I-35 NB: Closed

  Closed due to night time construction work. Working hours are 10:00 PM to 04:00 AM.

  I-35 NB • IA • Until Sep 15, 4:00 AM Details

• Lanes blocked

  I-35: Between Exit 70: Mills Civic Parkway and University Avenue (West Des Moines). Night time construction work…

  Between Exit 70: Mills Civic Parkway and University Avenue (West Des Moines). Night time construction work. Intermittent lane closure. From 9:00PM CDT to 5:00AM CDT on Sunday, Monday, Tuesday, Wednesday and Thursday. Starting today at 9:00PM CDT until December 31, 2026 at about 5:00AM CDT. Comment: Grimes RCE (800-251-2707) - Polk County

  I-35 • northbound • IA • Until Sep 15, 11:00 AM

• Lanes blocked

  I-35: Between Exit 94: 36th Street (Ankeny) and the South Skunk River (1 mile north of the Huxley area). Both shoulders…

  Between Exit 94: 36th Street (Ankeny) and the South Skunk River (1 mile north of the Huxley area). Both shoulders closed due to road construction work. Expect changing traffic patterns. Until December 31, 2026 at about 5:00PM CDT. Full schedule below: • June 5, 2023, 12:00PM - December 31, 5:00PM Comment: Marshalltown RCE (800-251-2706) - Polk County **Intermittent Shoulder Closure**

  I-35 • northbound • IA • Ongoing

• Lanes blocked

  I-35: Between Exit 70: Mills Civic Parkway and University Avenue (West Des Moines). Road closed due to night time…

  Between Exit 70: Mills Civic Parkway and University Avenue (West Des Moines). Road closed due to night time construction work. Detour in operation. Follow the Iowa DOT-recommended detour around the closure. See map for detour(s). Starting September 14, 2026 at 10:00PM CDT until September 15, 2026 at about 4:00AM CDT. Full schedule below: • September 14, 10:00PM - September 15, 4:00AM Comment: Grimes RCE (800-251-2707) - Polk County

  I-35 • northbound • IA • Until Sep 15, 9:00 AM

• Lanes blocked

  RAMP: NORTHEAST 36TH STREET E TO I-35: At Entrance ramp from Northeast 36th Street. Entrance ramp closed due to road construction work. Detour in operation…

  At Entrance ramp from Northeast 36th Street. Entrance ramp closed due to road construction work. Detour in operation. Follow the Iowa DOT-recommended detour around the closure. See map for detour(s). Starting today at 8:00PM CDT until November 20, 2026 at about 6:00AM CDT. Full schedule below: • April 15, 8:00PM - November 20, 6:00AM Comment: Marshalltown RCE (800-251-2706) - Polk County

  RAMP: NORTHEAST 36TH STREET E TO I-35 • northbound • IA • Until Nov 20, 12:00 PM

• Lanes blocked

  I-35: Between Exit 208: County Road A38 and the Minnesota Border (17 to 21 miles north of the Clear Lake area). Road…

  Between Exit 208: County Road A38 and the Minnesota Border (17 to 21 miles north of the Clear Lake area). Road construction. Intermittent lane closure. Width limit in effect. Width limit 20'0". Starting July 13, 2026 at 7:00AM CDT until October 15, 2026 at about 3:00PM CDT. Full schedule below: • July 13, 7:00AM - October 15, 3:00PM Comment: Mason City RCE (800-373-7344) - Worth County

  I-35 • northbound • IA • Until Oct 15, 8:00 PM

• Lanes blocked

  RAMP: HIGHWAY 105 E TO I-35: At Entrance ramp from Co 105. Road construction work is in progress. A lane is closed intermittently. There is a width…

  At Entrance ramp from Co 105. Road construction work is in progress. A lane is closed intermittently. There is a width limit in effect. Ramp restrictions are in force. Width limit 12'0". Until September 15, 2026 at about 6:00PM CDT. Full schedule below: • July 13, 8:00AM - September 15, 6:00PM Comment: Mason City RCE (800-373-7344) - Worth County

  RAMP: HIGHWAY 105 E TO I-35 • northbound • IA • Until Sep 15, 11:00 PM

• Lanes blocked

  I-35: Between Exit 94: 36th Street (Ankeny) and Exit 111 (near Ames). Night time construction work is in progress. A lane is…

  Between Exit 94: 36th Street (Ankeny) and Exit 111 (near Ames). Night time construction work is in progress. A lane is closed intermittently. From 7:00PM CDT to 6:00AM CDT on Sunday, Monday, Tuesday, Wednesday and Thursday. Until December 31, 2026 at about 6:00AM CDT. Comment: Marshalltown RCE (800-251-2706) - Polk & Story Counties

  I-35 • northbound • IA • Until Sep 15, 12:00 PM

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

Towns Along I-35 in Iowa

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

1. 3 mi Lamoni 1.7 mi off the road
2. 34 mi Osceola
3. 66 mi Norwalk 4.3 mi off the road
4. 73 mi Windsor Heights 3.3 mi off the road
5. 76 mi Urbandale
6. 80 mi Johnston 2.7 mi off the road
7. 87 mi Altoona 5.0 mi off the road
8. 97 mi Elkhart 2.4 mi off the road
9. 113 mi Ames 2.5 mi off the road
10. 123 mi Roland 3.5 mi off the road
11. 124 mi Story City
12. 194 mi Clear Lake

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

Related Roads

I-35 in Iowa Road Weather FAQ

Is Interstate 35 in Iowa closed right now?

Yes — one full closure is reported on I-35 in Iowa as of Sep 14, 2026 10:02 PM CDT. 22 lane closures, roadworks or restrictions are in force. They are listed under closures and road blocks on this page.

What are I-35 in Iowa road conditions today?

The map on this page colors the route along I-35 in Iowa by what is on the pavement right now — dry, wet, slush, snow or ice — from radar and surface data, last updated Sep 14, 2026 8:48 PM CDT. Right now temperatures run from 58°F to 80°F and the strongest wind is 13 mph.

Where are Iowa road closures reported officially?

Iowa's official traveler information service is 511ia.org, and it is where closures and restrictions are reported.

Are there live traffic cameras on I-35 in Iowa?

Yes. This page shows 6 live views on I-35 in Iowa from the state transportation departments' own camera feeds, further down the page, refreshed each time you load it.

How often are I-35 in Iowa 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.