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Accidents, roadworks and closures — updated in real time.

RoadworksSevere

US 18 westbound: Lane closure.

Between County Road S56 and US 65 (near Mason City). A Waze user reported a lane closure.

RoadworksModerate

US 18 in both directions: Road construction.

Between County Road S36 (1 mile west of the Mason City area) and County Road S56 (1 mile west of the Portland area). Road construction work is in progress. A lane is closed intermittently. Until October 30, 2026 at about 4:00PM CDT. Full schedule below: • October 12, 8:00AM - October 30, 4:00PM Comment: Mason City RCE (800-373-7344) - Cerro Gordo County

RoadworksModerate

IA 122 in both directions: Road construction.

Between County Road S34 and US 65 (Mason City). Road construction work is in progress. The roadway is shared with opposing traffic. There is a height limit in effect . There is a width limit in effect . Height limit 15'0" . Width limit 11'0" . Until October 28, 2026 at about 4:00PM CDT. Full schedule below: • May 1, 6:00AM - October 28, 4:00PM Comment: Mason City RCE (800-373-7344) - Cerro Gordo County

RoadworksModerate

US 65 in both directions: Right lane closed.

Between County Road B37 and IA 122 (Mason City). The right lane is closed due to road construction work. Until November 17, 2026 at about 3:00PM CDT. Full schedule below: • March 23, 8:00AM - November 17, 3:00PM Comment: Mason City RCE (800-373-7344) - Cerro Gordo County

Cameras in Cerro Gordo County

See all (13)
D2 - I-35 @ MM 194.2 (US 18 Clear Lake)D2 - I-35 @ MM 194.2 (US 18 Clear Lake)Parking Only: I-35 NB MM 196 near Clear LkParking Only: I-35 NB MM 196 near Clear Lk2BZ - IA 122 @ S Pierce Ave (IWZ 5779W)2BZ - IA 122 @ S Pierce Ave (IWZ 5779W)2BZ - IA 122 @ S Pierce Ave (IWZ 5779E)2BZ - IA 122 @ S Pierce Ave (IWZ 5779E)D2 - US 18 @ MM 186.3 near Mason City (03)D2 - US 18 @ MM 186.3 near Mason City (03)2BZ - IA 122 @ S Monroe Ave (IWZ 5785W)2BZ - IA 122 @ S Monroe Ave (IWZ 5785W)D2 - I-35 @ MM 196.3 near Clear Lake (D2TV01)D2 - I-35 @ MM 196.3 near Clear Lake (D2TV01)RWIS - US 18 MM 190 @ Mason City US18RWIS - US 18 MM 190 @ Mason City US182BZ - IA 122 @ S Monroe Ave (IWZ 5785E)2BZ - IA 122 @ S Monroe Ave (IWZ 5785E)RWIS - I-35 MM 187 @ Mason CityRWIS - I-35 MM 187 @ Mason CityParking Only: I-35 SB MM 196 near Clear LkParking Only: I-35 SB MM 196 near Clear LkD2 - US 18 @ MM 190.1 (Thrush Ave)-QD2 - US 18 @ MM 190.1 (Thrush Ave)-QD2 - US 18 @ MM 190.1 (Thrush Ave)D2 - US 18 @ MM 190.1 (Thrush Ave)
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