dhahn@hahn-eng.com
+845.279.2220
Parks and Recreation
A segment of the Riverwalk was installed along the shoreline in the park, connecting to new walkways throughout the park....
Roadways
Part of a multi-phase project to improve pedestrian and vehicular traffic in conjunction with enhancing the site aesthetics. some...
Stormwater and Floodplain
The Saxon Woods Golf Course is owned by Westchester County. James J. Hahn Engineering, P.C. analyzed the 217 acre watershed and...
Hahn Engineering has designed and construction administered more than a dozen stormwater management practices approved by the...
The project redeveloped Dobbs Ferry’s 13 acre Waterfront Park, as the park was underutilized with limited, deteriorated...
This project included the design and construction of 5,500 linear feet of bike and walking trails, a multi-use athletic field...
Sidewalks and Drainage Improvement Project....
Water Distribution and Treatment Design
Design, engineering report, WCDOH Permit, public bid, construction inspection of 250,000 gallon pre-stressed reinforced concrete...
Hahn Engineering completed the joint design and construction administration of a 2 million gallon a day water filtration plant...
Drainage Improvements including hydrologic, hydraulic analysis with Design and Construction Administration Services....
Barnhart Sidewalks included sidewalks, street trees, crosswalks and ramps, curbs and driveway aprons in a residential...
Design, permits, public bid, construction inspection of two bluegrass sod athletic fields, with irrigation, composting restrooms,...
