Intercounty Connector, Contract A


Location Montgomery County, MD, near Rockville, MD

Duration Fall 2007 – August 2010

Description This is a $464 million highway Design-Build Project. The Intercounty Connector includes interchanges with MD 355, the Metro Access Spur Road and MD Route 97 Georgia Avenue. The project also includes widening and rehabilitation I-370, which includes five bridges, one over a railroad, and paving overlay.

The Intercounty Connector project is an extremely environmentally and community sensitive project and extensive measures have been planned by the design-build team to minimize the environmental impact of this project. ICC – Contact A was the first of 5 contracts planned to create the $1.5 Billion 18.8 mile Intercounty Connector that will ultimately connect the I-270 corridor in Montgomery County, MD to the I-95/US1 corridor in Prince George’s County, MD.

Joint Venture Partners Corman Construction Company
Granite Construction, Inc.

Key Challenges & Project Details

  • ICC A was the first large design-build highway project in Maryland
  • Includes 18 bridges with 271,000 SF of bridge deck
  • Steel piles: 25,000 LF
  • Noise walls: 300,000 SF
  • Retaining walls: 52,000 SF
  • Drainage pipe: 55,000 LF
  • Utility relocation: 6,000 LF
  • Excavation: 2,500,000 CY
  • Asphalt Paving: 500,000 tons
  • Project sites cross the Upper and North Branches of the Rock Creek Watershed and the Upper Rock Creek Special Protection Area
  • Wagman installed box culverts up to 16 feet x 40 feet to allow large mammals such as deer to pass under the highway and eliminate contact with motorists
  • Wagman relocated over 100 box turtles prior to clearing and grubbing
  • Underground storm water management basins
  • Turtle relocation
  • Tree harvesting
  • Environmental Manager & Environmental Compliance Crews (crews dedicated to protecting the environment)
  • Culverts designed for fish passage
  • Electro-shocking of fish to relocate them from the work zone
  • 8-ft high right of way fence to protect deer, smaller opening fences at the base of right of way fence to keep smaller animals out
  • Re-forestation areas, invasive species program and plantings
  • Intercounty Connector has received national recognition for their environmental stewardship on this project. Click here to view their segment in “Green & Clean Transportation & Construction”

Web Site Link http://www.iccproject.com/