MD 4 sign)Crews Will Work on MD 4 (Governor Thomas Johnson Bridge) on October 24, then MD 231 (Benedict Bridge) on October 31 (October 21, 2021) - The Maryland Department of Transportation State Highway Administration (MDOT SHA) will perform routine maintenance over the next two Sundays on two Southern Maryland bridges, requiring one-lane closures for about four hours. On Sunday, October 24, crews will work on the MD 4 (Governor Thomas Johnson Bridge) over the Patuxent River at the Calvert/St. Mary’s County line. On Sunday, October 31, crews will work on the MD 231 (Benedict) bridge over the Patuxent River at the Charles/Calvert County line. Beginning at 6 a.m. and ending by 10 a.m. each Sunday, weather permitting one of the bridge’s two lanes will be closed. Crews will alternate traffic using a flagging operation. Portable variable message signs will be placed along area state routes to make travelers aware of the closure.MDOT SHA works hard to maintain safe traffic mobility in work zones for our crews as well as our customers. Drivers need to stay alert, focus on driving and look for reduced speed limits, as well as other driving pattern changes. Please drive like you work here and slowdown in construction zones.Motorists can dial #77 on their mobile device for roadside assistance. For a list of all major MDOT SHA projects, go to Project Portal. Visit our homepage at roads.maryland.gov. For a look at real-time traffic conditions, go to md511.maryland.gov. Editor’s NoteFrom intersection improvements to widening and new interchange construction, MDOT SHA is investing in projects to enhance the commute and daily travel for millions of Marylanders. MDOT SHA maintains more than 2,500 bridges and 17,000 miles of non-toll state roads – the interstate, US and state numbered routes in Maryland’s 23 counties.