Greenbridge Construction specializes in structural concrete, including tilt-up, cast in place, high rise, mat slab, walls, post tension, place and finish, and a multitude of other load bearing and structurally monolithic concrete applications. In addition we do site concrete work including curb, gutter, side walk, paving including permeable and other applications. We are your specialist concrete contractor in Maryland, Metro DC, Virginia and Pennsylvania. Contact us today for a quote.


WRAIR Campus Boiler – Washington DC

Modify and upgrade Central Steam Plant (CSP) and heating Distribution System for Walter Reed Institute Of Research (WRAIR)
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Concrete Projects

  • GSA Denver47PM0517R0028; FDA Sidewalk Improvements
  • GSA Denver 47PM0517R0028; FDA 66 Vestibule
  • GSA Denver 47PM0517R0028; Loading Dock 10
  • GSA NPR 7PM0517R0028; FDA protective Services Clubhouse renovation
  • GSA Denver 47PM0517R0028; FDA Campus Bus Shelter and guard Booths
  • GSA NPR 47PM0517R0028; St Elizabeth’s Perimeter security Fence Project K-9 Inspections Pad

Government Printing Office Concrete Slab 5th Floor
Install A New Reinforced Concrete Floor At The US Government Publishing Office Building
C & D Washington, DC 20401

Install and finish 12,870 SF of New Fill-Slab with a concrete mix designed with a compressive strength of 3,600 pounds per square inch as shown on contract drawing. Existing wood block demolition, scarify and clean the surface, Clean new exposed surface to be free of dust and debris. Apply bonding grout to clean exposed concrete surfaces per manufacturer’s recommendations.

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Install welded wire fabric (6x6x10x10 mesh – 6″x6″ pattern with #10 gauge wire both directions) at approximately mid-slab. Stage Pump truck to deliver concrete to fifth floor and place with power buggies. Final Concrete Surface shall have a trowel finish, place control joints and expansion joints as per plans, consolidate, level and float to the proper elevation. trowel finishing shall begin after surface has received a float finish. Lightly tool all edges at construction joints and exercise care that slab edges are not depressed along bulkheads during finishing operations. Slab shall be covered and wet cured.


Baltimore County Public Schools
Sidewalk Replacement At The Student Drop Off Area
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The Installation Of Canopy Drainage Systems At New Town High School

The scope of work consisted of removal, disposal and replacement of approximately ninety foot of curb and gutter, 2200 sq ft at 10” thick of sidewalk, and the installation of drainage systems for the canopies over the exterior doors to channel water away from the sidewalk area, install four 4” PVC drain tile prior to pouring new sidewalk at the student drop off area. Install 14 steel bollards placed 5’ on center and 42” high, all work in accordance to ADA compliant to make new entrance handicap accessible.

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