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[[Maryland Route 4]] is the highway which crosses the Patuxent River at the Thomas Johnson Bridge. The north end of the bridge, on the Calvert side, is located in [[Solomons, Maryland|Solomons]]. Just prior to the bridge, [[Maryland Route 4|Route 2-4]] narrows from four lanes to two, and [[Maryland Route 2|Route 2]] exits off under the bridge and heads toward downtown [[Solomons, Maryland|Solomons]]. [[Maryland Route 4|Route 4]] continues onto the bridge itself and over the [[Patuxent River]].

==Description==