Paper Mill Road (MD 145) crosses the Gunpowder Falls within one of Baltimore’s major watersheds, the Loch Raven Reservoir.  The existing bridge at this location is a well-known landmark; the distinctive arch truss designed early in the 20th century is one of a limited number of examples of steel bridges modeled after the Hell’s Gate Arch in New York City and three-hinged arch bridges within Maryland.  Unfortunately, local site conditions prevented the bridge from adapting to the traffic needs that have increased over time.  In addition, the bridge reached an advanced state of deterioration by the end of the century. 

• JMT evaluated various options involving rehabilitation and replacement in the preliminary engineering stage.  Once the City determined the best solution to be the construction of a new, more functional bridge next to the existing bridge, JMT began the final design phase to create a signature structure.
• The new bridge is a grand complement to the older bridge, which will serve as part of a future pedestrian hiker-biker trail.
• The new, 670 foot long structure is located 99 feet above the reservoir and approximately 25 feet north of the older bridge.  A 495 foot steel box arch span spans the reservoir, thereby eliminating impacts to the waterway as well as minimizing other environmental impacts. 
• The new Paper Mill Road Bridge is a perfect companion to the existing historic structure, creating a striking overall appearance for this well-traveled yet environmentally sensitive area.  Motorists now benefit from an improved alignment with milder approach roadway curves. 

JMT has received multiple national and regional awards for excellence during the design and construction of this project.

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