The Intercounty Connector Contract B

Category
Design-Build

Client
Maryland State Highway Administration (MSHA)

Location
Montgomery County, Maryland
East of MD 97 (Georgia Avenue) to West of US 29  (Columbia Pike)

Key Challenges & Project Details

• Design and construction of 6.9 miles of controlled access, 6 lane highway
• Considered the most environmentally sensitive stretch of the 18 mile ICC
  • Project traverses two miles of the Upper Paint Branch Special Protection Area
  • Storm water management a particular challenge as the project traverses two subwatersheds of the Anacostia River, with 5 miles of roadway built through the Northwest Branch
• 10 bridge structures, of which five are  new additional bridges serving MD 28 , MD 182 and MD 650
• Two new interchanges: ICC / MD182 and ICC / MD650
• 7 miles of sound barriers to reduce highway noise
• 10 cross culverts, built to match and facilitate natural processes of the landscape
• Culvert 7 required full aquatic and fish passage
• Culverts 2 and 3 required aquatic passage, but no fish passage
• Culver 8 required small mammal passage
• 2.7 miles of new bike paths
• Monitoring  protected wetlands and watersheds, specimen forests, forested habitat, flood plains, streams and 12 rare, threatened or endangered species
• FEIS mandated unprecedented environmental designs and erosion and sediment controls
• Establishment of environmental team and plans to include water-quality monitoring, thermal reductions to storm water runoff, reforestation, air-quality management, spill prevention and storm water pollution countermeasures, rigorous review of design and construction for regulatory compliance and comprehensive employee training on environmental stewardship
• Lighting and signalization; signage; electronic toll collection facilities; intelligent transportation systems; utility relocations; traffic maintenance
• Erosion and sediment control; design/construction quality control and community outreach support
• $560 million, the largest contract ever awarded by the state of Maryland

Joint Venture Partners
Kiewit
GA & FC Wagman

Design Partners
PTG – Parsons Transportation Group
KCI Technologies, Inc.
Gannett Fleming, Inc.

Project ongoing
Completion date: Late Fall 2011