Published on May 14, 2024

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Road Closure from May 28, 2024 through August 4, 2024




Contact: Carla Hass

May 14, 2024   Phone: (530) 621-4609


(PLACERVILLE, CA) – El Dorado County’s Department of Transportation (DOT) will be performing structures, drainage, materials deliveries, road maintenance, and bridge maintenance work on Mosquito Road from 0.6 miles north to 0.8 miles south of the Mosquito Road Bridge. The construction work will require full closure of Mosquito Road at the gates beginning Tuesday, May 28, 2024 and continue through Sunday, August 4, 2024, while school is out of session. A detour has been established(PDF, 552KB)  via Rock Creek Road for which motorists should expect delays and allow extra time for travel.


 Mosquito Road & Mosquito Bridge (Project Work & Road Maintenance Work)

May 28, 2024
August 4, 2024

 All Day Closure & Flagging
 Mosquito Road Bridge (Bridge Maintenance Work)

July 8, 2024
July 26, 2024

All Day Closure


The closure is necessary to ensure motorist and worker safety while the County’s Contractor performs drainage system installations, structures concrete placements, materials deliveries, and miscellaneous Contract work for the Project that is on or adjacent to Mosquito Road. The County DOT Road Maintenance Crew will be performing weekly inspections and temporary cold patch repairs on Mosquito Road throughout the summer closure and year. The County DOT Bridge Crew will also be performing annual bridge maintenance work on the Mosquito Road Bridge from Monday, July 8, 2024 through Friday, July 26, 2024 while the roadway is closed.

All work by the County’s Contractor, County DOT Road Maintenance Crew, and County DOT Bridge Crew will be left in a condition that will accommodate emergency access at the end of each shift and on weekends in the event of an emergency or evacuation. The exception will be any structural member replacement, by the County DOT Bridge Crew, will keep the old Mosquito Bridge closed until the bridge is structurally safe to allow access. The County will update Emergency Services in advance and daily if any work is needed that will prevent access. In the event of an evacuation, the Project and bridge maintenance work will shut down to accommodate Emergency Services and public traffic.

During the full closure work, Project activities adjacent to Mosquito Road will continue to require intermittent reversing traffic controls, flaggers, construction signs, changeable message boards, and piloted semi-truck/trailer loads as needed. Various locations of Mosquito Road will utilize these traffic controls at various times and dates from Union Ridge Road to Rock Creek Road and may also include the dirt road access to Quintet Fire Station. Unless there is a public safety concern, traffic stops are intended to be between five (5) to ten (10) minutes maximum. Delays could be up to twenty (20) minutes depending upon traffic of slow-moving equipment and wide loads. Traffic will be released as soon as there is safe travel through the work zones. The public should anticipate delays, drive the posted speed limits, stop for flaggers, and anticipate slowdowns in work zones.


The County sincerely appreciates the cooperation and patience of motorists that use this roadway, and we apologize for any inconvenience as a result of these closures.


For questions regarding this construction, please contact the County’s Transportation main line at (530) 621-5900 (select Option 3 for Engineering).





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