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Scott County staff recommend all‑way stop and 45 mph speed limit on 2 10th Street at Jersey Ridge Road
Summary
County engineers told the Board of Supervisors the 2 10th Street/Jersey Ridge Road intersection met MUTCD warrants for all‑way stop control and recommended reducing the posted speed on 2 10th Street from 55 to 45 mph to address sight‑distance and crash patterns.
County engineering staff presented a safety study at the Scott County Board of Supervisors meeting on Sept. 23, 2025, recommending an immediate conversion of the 2 10th Street and Jersey Ridge Road intersection to an all‑way stop and a reduction of the posted speed limit on 2 10th Street from 55 to 45 miles per hour between Scott Park Road and the Crow Creek Bridge.
The study, presented by S3, said five‑year crash history and traffic counts drove the recommendation. “Traffic studies recorded average daily volumes of a little over 7,000 vehicles per day on 2 10th Street, and then about 4,900 on Jersey Ridge Road,” S3 said, and the corridor’s five‑year crash review documented 21 crashes including one fatality. S3 said the MUTCD analysis showed the intersection met two warrants for all‑way stop control, citing hourly traffic volumes and left‑turn conflict crashes.
The county plans near‑term measures to improve visibility and driver awareness: S3 said crews will add rumble strips to both east and west legs, install flashing red beacons on each stop sign leg, add “stop ahead” signs with flags, and post public notices about the change roughly a month in advance. S3 described the long‑term option as a roundabout and said the county will continue to evaluate feasibility and potential MPO or federal funding for that solution.
Supervisors asked about local impacts. Supervisor Beck raised concerns about employee queuing at the nearby John Deere facility and urged that company officials be notified as a courtesy ahead of implementation; Beck said advance notice would help employees and shift planners adjust. Supervisor Maria asked about nighttime visibility; S3 said the flashing beacons and rumble strips should improve detection on the hill approaching the intersection.
S3 noted the state‑owned Highway 130/Plainview intersection would require Iowa DOT approval for any control changes and said staff have been consulting DOT traffic engineers about additional measures there.
The presentation concluded with staff saying an ordinance to implement the changes will proceed through three readings, with a first reading scheduled for Thursday; the board did not take a formal roll‑call vote during the discussion.
