Hydrology & Hydraulics
MD 831 Over Jennings Run
Maryland State Highway 
Administration
Brudis & Associates, Inc. was responsible for providing complete hydrology and hydraulic analysis for the planned removal of the MD 831 bridge over Jennings Run in Alleghany County, Maryland.
BAI analyzed the removal of the bridge to determine the flooding conditions of the downstream properties adjacent to the bridge. There were a number of buildings located upstream and downstream of the bridge within the hydraulic influence of the structure scheduled for removal. BAI’s analysis also included effects to performance and safety of two other bridges located in the vicinity.
The hydrology study of the 38 mi² Jennings Run watershed as well as the 227 mi² Wills Creek watershed, was necessary in order to determine hydrographs, peak discharges, and timing of the peak discharges in these locations.
MD 287 Over the Choptank River
Maryland State Highway Administration
Brudis & Associates, Inc. was responsible for complete hydrology and hydraulic analysis for the MD Route 287 bridge over the Choptank River. The existing Sandy Island Bridge is a 240 ft. four-span concrete arch bridge that is to be removed. A replacement is to be constructed downstream.
The Choptank River is located on the Maryland Eastern Shore and drains to the Chesapeake Bay. It is also located in a Coastal Area watershed. BAI developed a complete hydrology model and analysis of the 99 mi² Choptank River watershed located in Caroline County (16 mi²), Queen Anne’s County (3 mi²) and Kent County (80 mi²), DE. The hydrology analysis determined existing and ultimate development condition discharges at the MD 287 crossing.
MD 131 Over Roland Run Tributary
Maryland State Highway Administration
In cooperation with the Maryland State Highway Administration’s Office of Structures, Brudis & Associates, Inc. performed the hydrology and hydraulic analysis of the 4.3 mi² Roland Run watershed located in Baltimore County, Maryland.
The purpose of this analysis was to determine existing and ultimate development condition discharges at the MD 131 bridge over the Tributary of Roland Run, as well as three other crossings downstream of the MD 131 bridge.